during a heart attack, cardiac muscle cells are deprived of their blood supply, yet the atria are still receiving blood. explain.
Answers
During a heart attack, the coronary arteries that supply oxygen and nutrients to the cardiac muscle cells become blocked, leading to deprivation of blood supply to the affected region.
The coronary circulation consists of coronary arteries and veins that supply and drain blood from the heart muscle. The coronary arteries originate from the base of the aorta and branch out to provide blood supply to the cardiac muscle cells. When a heart attack occurs, a coronary artery becomes blocked, usually due to a blood clot or atherosclerosis, leading to restricted blood flow downstream.
Although the affected region of the heart muscle supplied by the blocked artery experiences ischemia (lack of oxygen and nutrients), the atria continue to receive blood. The atria are primarily perfused by the coronary sinus, a large vein located on the posterior surface of the heart. The coronary sinus collects deoxygenated blood from the cardiac veins and delivers it directly into the right atrium. This blood supply to the atria is separate from the coronary arteries and is not typically affected by a blockage in the coronary circulation.
It's important to note that while the atria continue to receive blood during a heart attack, the overall function of the heart may still be compromised due to the damage and impaired function of the affected cardiac muscle cells in other regions supplied by the blocked artery. Prompt medical intervention is crucial to restore blood flow and minimize the extent of damage to the heart muscle.
To learn more about heart attack, here
https://brainly.com/question/4539139
#SPJ4
Related Questions
what does it mean when a plant isnt going down
Answers
Answer:
Explanation:
Wilting of leaves.
PLEASE ANSWER ASAP!! WILL MAKE BRAINLIEST!!
What is the main type of weathering in deserts?
a. physical weathering
b. weathering by organic acids
c. chemical weathering
Answers
The two main types of weathering which occur in deserts are Mechanical weathering, which is the disintegration of a rock by mechanical forces that do not change the rock's chemical composition and Chemical weathering, which is the decomposition of a rock by the alteration of its chemical composition.
Hope this helps! :^)
Although a liver cell and a muscle cell in a human cell develope from the same single cell, their appearance and function is different. This is because their liver cell is?
Answers
Answer:
liver cells:
contain different genes than the muscle celldestroyes the muscle cell genes it contains lacks the genes found in muscle cellsWhich statement(s) is/are indicative of a covalent bond?
1) Electron movement is concentrated somewhere between the two bonded nuclei.
II) Electron density is focused on one element in the bond, generally resulting in the formation of a crystalline substance.
III) The greatest probability of finding the shared electrons is in the area of orbital overlap.
IV) The valence electrons involved in the bond are moving solely around the nucleus of the atom with the higher electron affinity.
es )
I and II
ll and I
I and III
I, III and IV
An substance for a crystalline is NaCl
Answers
Answer:
The statements which are indicative of a covalent bond are as follows -:
Electron movement is concentrated somewhere between the two bonded nuclei.The greatest probability of finding the shared electrons is in the area of orbital overlap.The valence electrons involved in the bond are moving solely around the nucleus of the atom with the higher electron affinity.Explanation:
Among the given four statements, three statements are correct, the statement- "Electron density is focused on one element in the bond, generally resulting in the formation of a crystalline substance." is incorrect as In ionic bonds, crystalline formation takes place.
Somewhere between the two bonded nuclei, electron movement is centered. --: Covalent bonds are a class of chemical bonds in which valence electrons are shared between two atoms, typically two non-metals. The formation of a covalent bond helps the non-metals to obey the octet 's law and thus become more stable.The greatest probability of finding the shared electrons is in the area of orbital overlap.-: A pi bond (π bond) is a type of covalent bond arising from the overlap of two p orbitals side by side.The valence electrons involved in the bond are moving solely around the nucleus of the atom with the higher electron affinity.- : As pairs of electrons are exchanged by atoms, covalent bonding happens. In order to achieve further stability, which is gained by forming a complete electron shell, atoms can covalently bond with other atoms. Atoms can fill their outer electron shell and achieve stability by exchanging their outermost (valence) electrons.Hence , the correct option is D (I,II and IV )What part of the cell provides temporary storage of food, enzymes, and waste products
Answers
Answer:
The Vacuole is the part of the cell that provides temporary storage to food, enzymes, and waste products.
Explanation:
The cell is the basic or fundamental unit of life. It is composed of a cell membrane, cytoplasm and cell organelles. The organelle that provide temporary storage for food, enzymes and waste products is vacuole.
What is vacuole?Vacuole is a membrane-bound cell organelle that is permanent and large in size in plant cell, but are temporary or nearly absent in animal cell.
It is the compartment that occupies a significant volume in plant cell.It is temporary location for the storage of food, enzymes and other waste products.
Thus, vacuole is the cell that provides temporary storage of food, enzymes, and waste products.
For more details regarding vacuole visit:
https://brainly.com/question/13948086
#SPJ4
what worries scientists about mapping? (oceans)
Answers
Answer:
I think the safety of the marine communities and the fact that there's too much water in the way to do mapping
Explanation:
solve it according to the question please.
the subject is petroleum, so please solve it regardibg
this.
F- Explain the global carbon-climate cycle during the Cretaceous period. (Write only one paragraph describing what happened during the Cretaceous geological period in order to have good source rocks.)
Answers
During the Cretaceous period, high temperatures and abundant vegetation resulted in increased \(CO_2\) levels, leading to the accumulation of organic matter and the formation of good source rocks for oil and gas.
During the Cretaceous period, spanning from approximately 145 to 66 million years ago, the global carbon-climate cycle played a crucial role in the development of favorable conditions for the formation of good source rocks. The period was characterized by high global temperatures and abundant vegetation, resulting in increased carbon dioxide \((CO_2)\) levels in the atmosphere.
The elevated \(CO_2\) levels fueled vigorous photosynthesis, leading to the accumulation of organic matter in marine and terrestrial ecosystems. As this organic matter was buried and subjected to heat and pressure over millions of years, it transformed into oil and gas, creating potential source rocks. The warm climate and prolific vegetation during the Cretaceous, along with the subsequent geological processes, contributed to the formation of the rich hydrocarbon reserves that are vital to our energy resources today.
To learn more about Cretaceous follow the link:
https://brainly.com/question/2093019
#SPJ4
The correct question is:
Explain the global carbon-climate cycle during the Cretaceous period. (Write only one paragraph describing what happened during the Cretaceous geological period in order to have good source rocks.)
Enamel is the hardest substance in the human body. Justify your answer.
Answers
Enamel is indeed the hardest substance in the human body. It is present in teeth of humans. It covers every tooth and provides the hard layer.
Tooth Enamel is hard glossy substance that is comprised of calcium and phosphate mineral crystals which in return makes our teeth more stronger. Teeth enamel care is extremely important to maintain the oral health of teeth.
Tooth Enamel is one of the major tissue that make up tooth in humans. It covers the top layer of the teeth known as Crown. Calcium hardens the tooth enamel. Enamel contains 96% of the minerals. The color of Enamel varies from light yellow to white.
Read more about Enamel,
https://brainly.com/question/16865303
What is contained within the archegonium of both mosses and ferns? Sperm cells. The sporophyte generation. Egg/ovule cells
Answers
The archegonium of both mosses and ferns contains egg/ovule cells. These cells play a crucial role in the sexual reproduction of these plants by receiving and fertilizing sperm cells, leading to the development of the sporophyte generation.
The archegonium is a structure present in the gametophyte generation of these plants and serves as the female reproductive organ. It consists of a venter, which is a flask-shaped structure that houses the egg cell, and a long neck that extends above the surface of the plant. The egg/ovule cells within the archegonium are essential for sexual reproduction in mosses and ferns. When a sperm cell from the male gametophyte reaches the archegonium, it fertilizes the egg cell, resulting in the formation of a zygote.
Learn more about archegonium: https://brainly.com/question/31536133
#SPJ11
A field that is focused on preventing death, disease, and disability by reducing exposure to adverse conditions and prom es behavioral change is called public policy. O healthy visions. biodiversity implications. environmental health.
Answers
A field that is focused on preventing death, disease, and disability by reducing exposure to adverse conditions and promoting behavioral change is called environmental health.
Environmental health refers to the practice of preventing diseases, injury, and disability by reducing exposure to adverse environmental conditions and promoting behavior change. It is a field that is focused on identifying and assessing environmental factors that can affect human health and taking action to control or eliminate those factors. The field of environmental health deals with a wide range of issues, including air quality, water quality, food safety, hazardous waste management, and the effects of climate change.
It is an interdisciplinary field that brings together experts from many different fields, including public health, environmental science, toxicology, epidemiology, and engineering. Environmental health professionals work to promote healthy environments and prevent illness and disease by developing and implementing policies and programs that reduce exposure to environmental hazards and promote healthy behavior.
To learn more about environmental health here
https://brainly.com/question/33009900
#SPJ11
a dtc service, such as 23andme, indicates that jane has a snp that is a genetic risk factor for hypothyroidism. the snp has an odds ratio (or) of 1.5. the average population risk of developing hypothyroidism is 4%. based on this information, what is jane's overall risk of hypothyroidism?
Answers
The odds ratio (OR) for the SNP is 1.5. 4% of people in the population are at risk of getting hypothyroidism. According to this data, Jane's total risk of hypothyroidism is 6%.
When the thyroid gland is underactive or hypothyroidism, your body cannot produce enough thyroid hormones to satisfy its demands. The thyroid is a little gland at the front of your neck that resembles a butterfly. hypothyroidism hormone bioactivity may be impacted by single nucleotide polymorphisms (SNPs) in genes involved in thyroid hormone metabolism. Thyroid hormones (THs) attach to thyroid hormone receptors (TRs), which are nuclear hormone receptors. TRs function as ligand-activated transcription factors that bind to the target gene's promoters' cognate thyroid hormone response elements (TREs).
learn more about hypothyroidism here:
https://brainly.com/question/5785569
#SPJ4
a single nucleotide deletion during dna replication
Answers
An error during DNA replication known as a deletion mutation eliminates nucleotides from the genome. A deletion mutation can eliminate a single nucleotide or whole nucleotide sequences.
By eliminating at least one nucleotide from a gene, a deletion modifies the DNA sequence. Larger deletions can eliminate a whole gene or a number of nearby genes, while smaller deletions just delete one or a few nucleotides from a gene. The function of the affected protein or proteins may change as a result of the deleted DNA.
When a portion of a DNA molecule is not replicated during DNA synthesis, a deletion mutation happens. An uncopied region can range in size from a single nucleotide to an entire chromosome. the DNA's loss throughout replication.
Learn more about replication Visit: brainly.com/question/21265857
#SPJ4
Correct Question:
Explain about a single nucleotide deletion during dna replication.
what are the two protein-pigment complexes in the thylakoid membranes that are used in the light reactions
Answers
Answer:
Thylakoid membranes contain integral membrane proteins which play an important role in light harvesting and the light-dependent reactions of photosynthesis. There are four major protein complexes in the thylakoid membrane: Photosystems I and II; Cytochrome b6f complex; ATP synthase
a specialty store would be best defined as offering:
Answers
Answer:
A specialty store is best defined as offering a narrow range of specialized products or services within a specific industry or niche. These stores typically focus on a particular category or type of product and provide a wide variety of options within that category. The products found in a specialty store are often unique, high-quality, or cater to specific customer preferences. Examples of specialty stores include boutique clothing stores, gourmet food shops, electronics stores specializing in a specific brand, or art supply stores. The key characteristic is that they offer a specialized and curated selection of products or services to cater to a specific target market or customer need.
Learn more about specialty stores: https://brainly.com/question/32255046
#SPJ11
which biomolecule makes up the structure of muscles, fingernails, and hair?
Answers
Proteins proteins are the primary building materials of the body.
the explanation for energy
Answers
The release of neurotransmitter from the presynaptic cell is an example of:
Answers
Exocytosis is highly specialized in secretory cells and neurons, is highly regulated, and constitutes the main cellular mechanism for neurotransmitter secretion.
What is exocytosis?It involves the fusion of the vesicular membrane to the plasma membrane, in a calcium-dependent manner that releases molecules that perform specific functions in the body.
Neurotransmitter exocytosis is an essential part of presynaptic transmission and, by extension, of the functioning of the nervous system.
Therefore, we can conclude that exocytosis is highly specialized in secretory cells and neurons, is highly regulated, and constitutes the main cellular mechanism for neurotransmitter secretion.
Learn more about exocytosis here: https://brainly.com/question/6809083
The release of neurotransmitters from the presynaptic cell is an example of exocytosis.
What is exocytosis?Neurotransmitter is saved interior small sacs known as synaptic vesicles and is launched into the synaptic cleft of the synapse while a vesicle fuses with the cell membrane.
When a movement capability depolarizes the presynaptic plasma membrane, Ca2+-channels open, and Ca2+ flows into the nerve terminal to cause the exocytosis of synaptic vesicles, thereby freeing their neurotransmitters into the synaptic cleft.
To read more about the presynaptic plasma membrane refer link :
https://brainly.com/question/6809083
#SPJ4
Imagine you had to sort all of the living things on earth into groups. How would you sort them?
Answers
All of the Earth's living organisms can be divided into distinct categories in a variety of ways, but the most popular manner is through the use of a hierarchical classification scheme called taxonomy.
What is Taxonomy hierarchy?In this hierarchy, organisms are grouped based on shared traits, with each level getting more specialized as you descend.
From the broadest to the narrowest, the main taxonomic levels are:
The domain level of classification divides organisms into different cell types, and it is the widest level of classification. Eukarya, Archaea, and Bacteria are the three domains.
Kingdom: This level of classification divides organisms into groups based on their overarching traits and cellular make-up. Animalia, Plantae, Fungi, Protista, Archaea, and Bacteria are the six kingdoms.
Phylum: This level of classification divides creatures into groups depending on the structure and organization of their bodies.
Class – Based on similar structural, physiological, and behavioral traits, organisms are grouped at the class level.
Order: Organisms are categorized at the order level according to shared traits within a class.
Family: Within an order, organisms are grouped at the family level based on shared traits.
Genus – Based on their evolutionary connections and similar traits, species are grouped at the genus level.
Species - The species level of classification is the most detailed and divides organisms into groups based on their propensity to interbreed and give birth to live offspring.
Based on their traits and evolutionary connections, all species of life on Earth can be divided up into separate groupings using this classification method.
Therefore, all of the Earth's living organisms can be divided into distinct categories in a variety of ways, but the most popular manner is through the use of a hierarchical classification scheme called taxonomy.
Learn more about Taxonomy hierarchy, here:
https://brainly.com/question/30243181
#SPJ3
Please! I need an answer quick!
Which statement best compares segmented worms and roundworms?
A. Some segmented worms have setae, but roundworms do not.
B. Some roundworms have setae, but segmented worms do not.
C. Segmented worms have sense organs, but roundworms do not.
D. Roundworms have sense organs, but segmented worms do not.
Answers
The statement that best compares segmented worms and roundworms is A. Some segmented worms have setae, but roundworms do not.
Segmented worms belong to the phylum Annelida and roundworms belong to the phylum Nematode. Worms of both the phyla have their characteristic features which differentiate them from each other. Annelids have chitinous structures present in them which helps them in locomotion by its extension and contraction. Roundworms are generally parasites. So, they move by applying force through their muscles and pushing themselves forward.
Learn more about Annelids
https://brainly.com/question/11400463
State a reason why antacid should be taken when we suffer from indigestion
Answers
Answer: the base in antacid neutralises the extra acid produced in the stomach causing indigestion
\(\qquad\qquad\huge\underline{{\sf Answer}}\)
Antacids are mild bases that are used to increase overall ph of the HCl secreted in stomach for proper digestion, it is generally used if there's indigestion due to heavy secretion of HCl, but not to be used in normal way because it can cause increase in ph of gastric acid that causes improper digestion.
That's all ~
for several decades, vitamin d has been added to milk to help increase intake of this nutrient. but in some ethnic groups, this strategy isn’t working. why might this be?
Answers
The effectiveness of adding vitamin D to milk to increase intake of this nutrient may vary among different ethnic groups due to factors such as lactose intolerance, dietary preferences, cultural practices, and skin pigmentation.
Vitamin D is a nutrient that is essential for maintaining healthy bones and overall health. It has been added to milk as a fortification strategy to increase its intake among the general population. However, in some ethnic groups, this strategy may not be as effective due to various factors.
1. Lactose intolerance: Some ethnic groups, such as people of East Asian, African, and Native American descent, have higher rates of lactose intolerance. This means they have difficulty digesting lactose, a sugar found in milk, which can lead to gastrointestinal discomfort. As a result, they may avoid or consume less milk, resulting in lower vitamin D intake from fortified milk.
2. Dietary preferences and cultural practices: Some ethnic groups may have dietary preferences or cultural practices that do not include regular consumption of milk or dairy products. This can result in lower vitamin D intake from fortified milk in those communities.
3. Skin pigmentation and sun exposure: Vitamin D can also be synthesized by the body through exposure to sunlight. Darker skin pigmentation, common in some ethnic groups, reduces the skin's ability to produce vitamin D from sunlight. If these groups also have limited access to or consumption of fortified milk, they may be at a higher risk of vitamin D deficiency.
To know more about vitamin D
brainly.com/question/947265
#SPJ11
fatty acid oxidation produces ____. a. ketones b. pyruvate c. acetyl coa d. lactate e. fructose
Answers
Fatty acid oxidation produces acetyl CoA. The correct answer is option C.
During the process of fatty acid oxidation, long-chain fatty acids are broken down into acetyl CoA molecules through a series of enzymatic reactions. Acetyl CoA is a crucial molecule in cellular metabolism and serves as a substrate for the citric acid cycle (also known as the Krebs cycle or TCA cycle), where it enters the cycle to generate energy through the production of ATP. Acetyl CoA can also be used for the synthesis of ketone bodies in certain conditions, such as during prolonged fasting or in individuals following a low-carbohydrate diet. Therefore, the correct answer is option C.
To know more about Fatty acid, here
brainly.com/question/31752492
#SPJ4
replication moves outward from the origin in ________ direction(s) and is said to be ________.
A. one, bidirectional
B. both, unidirectional
C. unique, unidirectional
D. both, bidirectional
Answers
The correct answer is D. Replication moves outward from the origin in both directions and is said to be bidirectional.
Bidirectional replication occurs when DNA replication proceeds simultaneously in both directions from the origin. In other words, the DNA double helix is unwound and replicated in both directions, creating two replication forks that move away from each other. This process ensures that the entire DNA molecule is replicated efficiently and accurately. Replication is a fundamental process that allows cells to pass genetic information from one generation to the next, and it is essential for the growth and development of all organisms. Therefore, understanding the direction and mechanism of replication is critical for studying genetics and molecular biology.
To know more about Replication visit:
https://brainly.com/question/31456037
#SPJ11
Which two types of organisms are found in the domain Eukarya?
A. Archaea
B. Animals
C. Bacteria
D. Protists
Answers
Answer:
d and b
Explanation:
I have done middle school science.
Answer:
D. B.
Explanation:
These two types of organisms are found in the domain Eukarya.
Hope this is correct, have a great day.
when a muscle cell demands energy to contract,what happens to ATP
Answers
Answer:
he ATP is used to return the mysoin head to its starting position. The ATP is hydrolyzed to Pi + ADP. The head with the ADP and Pi attaches itself to the actin filament. When ADP and Pi release the mysoin head pulls back.
Explanation:
Answer:
The ATP is used to return the mysoin head to its starting position. The ATP is hydrolyzed to Pi + ADP. The head with the ADP and Pi attaches itself to the actin filament. When ADP and Pi release the mysoin head pulls backback
Explanation:
The angiosperm life cycle undergoes an alternation of generations - one multicellular stage is haploid and another multicellular stage is diploid. Based on your knowledge of the angiosperm life cycle, can you categorize the following structures as haploid, diploid, or something else? Sort each item to the appropriate binendosperm female gametophyte spermod Power sporophyte male gametophyte Typote egg cell Haploid : Diploid :Other :
Answers
Haploid: female gametophyte, male gametophyte . Diploid: sporophyte, endosperm . Other: egg cell, sperm .
What is sporophyte ?Sporophyte is the diploid generation in the life cycle of most plants and algae. It is the multicellular stage that produces spores through meiosis. This stage is dominant in most plants, with the gametophyte (haploid) stage lasting for a much shorter period of time. The sporophyte develops from the zygote, which forms after fertilization of the egg cell by a sperm cell.
The sporophyte consists of cell divisions and cell growth, resulting in the formation of an embryo, which then grows into a mature sporophyte. The sporophyte produces haploid spores through meiosis, which then develop into gametophytes.
To learn more about sporophyte
https://brainly.com/question/30655929
#SPJ1
What structure can be located midway between the anterosuperior iliac spine (ASIS) and pubic symphysis
Answers
The structure that can be located midway between the anterosuperior iliac spine (ASIS) and pubic symphysis is the inguinal ligament. The inguinal ligament is a band of fibrous tissue that runs from the ASIS to the pubic tubercle.
It forms the lower border of the inguinal canal, which is a passageway through the abdominal wall that allows structures to pass between the abdominal cavity and the external genitalia.
The inguinal ligament serves as an attachment point for several muscles of the hip and thigh, including the sartorius, tensor fasciae latae, and the rectus femoris.
It also plays a role in supporting the weight of the abdominal viscera and in preventing the herniation of abdominal contents through the inguinal canal.
The midpoint of the inguinal ligament is an important anatomical landmark used in clinical assessments of the groin, such as in the evaluation of hernias.
For more such answers on the inguinal ligament
https://brainly.com/question/30508564
#SPJ11
What liquid was used to dilute the yogurt so it was easier to see the bacteria on the slide?
Answers
Yogurt is typically diluted with water before being used as a sample for microscopic examination. It is simpler to examine the bacteria and other yogurt ingredients under a microscope thanks to the water's assistance in separating and dispersing them. Yet occasionally, different liquids, including saline solution or buffer solutions, can also be utilized for this.
Under a microscope, how do you see the microorganisms in yogurt?Locate a region of the yogurt that is relatively thin under low power; this is where the bacteria are. For a better look of the bacteria, change the magnification to high power (400X for most microscopes). These tiny organisms will be significantly easier to see if your microscope has an oil immersion lens.
How can bacteria be separated from yogurt?By homogenizing and dissolving curds under alkaline conditions, as well as by subjecting them to lysis with proteases or surfactants, it is possible to separate LAB from yogurt (Gunasekera et al., 2002). Centrifugation is used to gather the cells following these procedures.
To know more about bacteria visit:-
brainly.com/question/8008968
#SPJ9
How does teaching the public about energy conservation help decrease air
pollution?
O A. It increases the supply of electricity.
B. It reduces the demand for electricity.
C. It reduces the cost of electricity.
D. It increases the consi
nsumption of electricity.
Answers
What is the lower respiratory system?
Answers
Answer:
the major passages and structure of the lower repiratory tract include the windpipe (trachea) and within the lungs the bronchi,bronchioles and alveoli
Explanation:
mark me as brainliest
Answer:
The group of organs and tissues of the respiratory system that reside in the chest.
Explanation:
edge 2021 biology assignment