Exam (elaborations)

UCLA Phlebotomy Exam 4

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Course
UCLA Phlebotomy

Institution
UCLA Phlebotomy

How big is the heart - Correct Ans-size of a mans fist how many times does the heart beat per minute? per day? - Correct Ans-60-80 per minute 100,000 per day Four chambers of the heart - Correct Ans-right atrium, right ventricle, left atrium, left ventricle The heart - Correct Ans-loc...

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Uploaded on March 24, 2025
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Type Exam (elaborations)
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Institution UCLA Phlebotomy
Course UCLA Phlebotomy

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UCLA

UCLA Phlebotomy Exam 4
How big is the heart - Correct Ans-size of a mans fist

how many times does the heart beat per minute? per day? - Correct Ans-60-80 per
minute
100,000 per day

Four chambers of the heart - Correct Ans-right atrium, right ventricle, left atrium, left
ventricle

The heart - Correct Ans-located in the thoracic cavity between lungs
-muscular pump made of cardiac muscle fibers

septum - Correct Ans-wall that separates the heart into right and left sides

pericardium - Correct Ans-outer double walled sac in the heart that prevents friction
allowing it to beat fast

what are the three layers of the heart - Correct Ans-epicardium, myocardium,
endocardium

endocardium - Correct Ans-Inner layer of the heart

Myocardium - Correct Ans-muscular, middle layer of the heart

epicardium - Correct Ans-outer layer of the heart

atria - Correct Ans-receives blood into the heart from the body
-contraction pushes blood into ventricles
-left and right atria separated by interatrial septum

right atrium - Correct Ans-fills with deoxygenated blood from superior (arms) and
inferior (feet) vena cava

left atrium - Correct Ans-fills with oxygenated blood from the pulmonary vein

Ventricles - Correct Ans-receives blood from atria
-contraction pushes blood out of the heart
-left and right ventricles separated by interventricular septum

right ventricle - Correct Ans-pushes deoxygenated blood through pulmonary artery

left ventricle - Correct Ans-pushes oxygenated blood through the aorta

UCLA

, UCLA

which ventricle is bigger/thicker - Correct Ans-left because it has to pump blood to the
rest of the body

cardiac cyle - Correct Ans-the complete sequence of events in heart from the beginning
of one beat to the beginning of the following beat
-includes systole and diastole

cardiac output - Correct Ans-the volume of blood ejected from the left ventricle in 1
minute (approx. 5 liters)

stroke volume - Correct Ans-the volume of blood pumped from the left ventricle in one
beat

where does the right atrium pump blood to? - Correct Ans-into the right ventricle

where does the right ventricle receive blood from? - Correct Ans-right atrium

where does the left atrium pump blood to? - Correct Ans-left ventricle

where does the left ventricle receive blood from? - Correct Ans-left atrium

How many heart valves are there? - Correct Ans-4 tricuspid, bicuspid, pulmonary
semilunar, aortic semilunar

tricuspid valve - Correct Ans-right atrioventricular valve
-between right atrium and right ventricle

Right AV valve function - Correct Ans-closes when right ventricle contracts and
prevents blood from flowing back into right atrium

mitral(bicuspid) valve - Correct Ans-left atrioventricular valve
-between left atrium and left ventricle

Left AV valve function - Correct Ans-closes when the left ventricle contracts and
prevents blood from flowing back into left atrium

Pulmonary semilunar valve - Correct Ans-between right ventricle and pulmonary artery
-at the entrance of pulmonary artery

right semilunar valve function - Correct Ans-closes when the right ventricle relaxes and
prevents blood from flowing back to right ventricle

aortic semilunar valve - Correct Ans-between left ventricle and aorta
-at entrance of aorta

UCLA

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