Health

Health, 18.07.2019 23:30, 1074885

Which structure of the heart acts like an automatic door that closes once blood enters a chamber and forces it to exit in the proper direction a. atria b. valves c. arteries d. ventricles

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Health, 10.07.2019 16:00, alisonlebron15

1. a space or room within the heart. pulmonary 2. having to do with the entire body. capillaries 3. having to do with the lungs. artery 4. a blood vessel that takes oxygen-rich blood away from the heart. platelet 5. tiny blood vessels that pass food and oxygen to cells. ventricle 6. a cell fragment which aids in the clotting of blood. chamber 7. a lower chamber of the heart that pumps blood. plasma 8. an upper chamber of the heart that receives blood from the body. atrium 9. the fluid in which blood cells are suspended. systemic

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Biology, 30.07.2019 02:30, tiannahines810

Which chamber of the heart do you think is the most muscular? explain your reasoning. a growing fetus has a vessel, the ductus arteriosus, in the heart that connects the pulmonary artery with the aorta and conducts blood directly from the right ventricle to the aorta. why do you think this vessel closes soon after birth? in most of the body, the arteries carry oxygenated blood and the veins carry deoxygenated blood. the exception to this pattern is the heart. explain how and why specific arteries and veins of the heart are different from the pattern seen in the rest of the body. describe the mechanisms in place to prevent the blood from flowing in the wrong direction through the heart. explain what happens to tissues, such as the heart, or the brain, if oxygenated blood is not delivered in a timely manner?

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Biology, 23.08.2019 05:30, gungamer720

Human hearts have pairs of two types of chambers; the atria (plural for atrium)and the ventricles. atria are where blood enters the heart and ventricles pump the blood out of the heart. the heart also takes in oxygen poor blood, pumps it through the lungs or gills (fish), where the blood is oxygenated, and then pumped through the rest of the body. identify which statement is correct. a) fish have a three-chamber heart. b) reptiles have a two-chamber heart. c) mammals have a four-chamber heart. d) none of these statements are correct.

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Biology, 09.10.2019 16:50, vgann3020

Which structure of the heart acts like an automatic door that closes once blood enters a chamber and forces it to exit in the proper direction. a. atria c. arteries b. valves d. ventricles

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