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Circulation and Gas Exchange fully solved
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Circulation and Gas Exchange fully solved
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Circulation and Gas Exchangegastrovascular cavity - correct answer ✔✔fluid bathes both the inner and outer tissue layers, facilitating
exchange of gases and waste.
fluid, vessels, muscular pump - correct answer ✔✔three components of the circulatory system
heart - correct answer ✔✔muscular pump that powers circulation by using metabolic energy to elevate
the hydrostatic pressure of the circulatory fluid
open circulatory system - correct answer ✔✔hemolymph bathes fluid directly and is pumped through
sinuses surrounding organs
hemolymph - correct answer ✔✔interstitial/circulatory fluid combined, bathes body cells.
closed circulatory system - correct answer ✔✔blood is confined to vessels and distinct from the
interstitial fluid. Hearts pump blood into vessels that infiltrate the organs.
cardiovascular system - correct answer ✔✔another name for the closed circulatory system
Arteries - correct answer ✔✔carry blood to organs Away from the heart
arterioles - correct answer ✔✔between arteries and capillaries
capillaries - correct answer ✔✔microscopic vessels with thin porous walls. capillary beds infiltrate tissues
venules - correct answer ✔✔betweens capillaries and veins
veins - correct answer ✔✔carry blood back to the heart
, atria - correct answer ✔✔the chambers that receive blood entering the heart
ventricles - correct answer ✔✔the chambers responsible for pumping blood out of the heart
single circulation - correct answer ✔✔blood passes through the heart once per circuit
double circulation - correct answer ✔✔two circuits: pulmonary/pulmocutaneous circuit and systematic
pulmonary circuit - correct answer ✔✔carries blood to the lungs for gas exchange and returns it to the
heart
systematic circuit - correct answer ✔✔carries blood between the heart and the rest of the body.
Supplies oxygen and nutrients to body tissues and organs and picks up carbon carbon dioxide and other
wastes. Carries oxygen poor blood to the heart.
cardiac cycle - correct answer ✔✔one complete sequence of pumping and filling
systole - correct answer ✔✔contraction phase, larger number
diastole - correct answer ✔✔relaxation phase, smaller number
cardiac output - correct answer ✔✔volume of blood a ventricle pumps per minute. heart rate + stroke
volume
Atrioventricular valve - correct answer ✔✔between atrium and ventricle, anchored by strong fibers that
keep them from turning inside out
Semilunar valves - correct answer ✔✔located at the exits of the heart where the aorta leaves the LV and
pulmonary artery leaves the RV
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