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Ch. 15 B

Flashcards to review for the Ch. 15B Quiz

QuestionAnswer
humans have what kind of circulatory system? closed circulatory system
always carry blood away form the heart. arteries
the smallest vessels. capillaries
capillaries merge to form ________, which carry blood toward the heart veins
a muscular organ about the size of your fist. only function is to pump blood. beats 60-80 times per minute when resting. Has more endurance than any other muscle. heart
upper thin walled chambers of the heart. atria
larger, lower thick walled chambers of the heart ventricles
the atrium and ventricle on each side of the heart are separated by one-way valves called what? atrioventricular valves
one-way valves. allow blood to leave the ventricles but prevent it from returning. semilunar valves
returns blood from the upper body regions to right atrium of the heart. superior vena cava
returns blood from the lower body regions to right atrium of the heart. inferior vena cava
the blood moves through the semilunar valve into these, the only arteries that carry deoxygenated blood pulmonary arteries
this is the largest artery in the body. it branches to supply blood to all of the body. aorta
the heart's nourishment is supplied primarily by two __________ _____________. coronary arteries
the rhythmic expansion of the arteries caused by the pumping of the heart pulse
the push of circulating blood against the walls of the arteries blood pressure
only veins that carry oxygenated blood carry blood back to heart from lungs
the sac that surrounds the heart and contains a lubricating fluid pericardium
which chamber receives deoxygenated blood from the body right atrium
To where does the right ventricle pump blood? the lungs
blood leaving the left ventricle exits through which valve? aortic or left semilunar valve
The aorta branches to form smaller and smaller _____________. arteries
Other name for left semilunar valve aortic semilunar valve
Other name for right semilunar valve pulmonary semilunar valve
Created by: Mr.JFoster
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