cardiovascular

Question 1

Apex

Answer 1

tip or rounded top such as the lungs or the heart

Question 2

Base

Answer 2

opposite the apex

Question 3

Pericardium

Answer 3

the sack around the heart that is used to compress it

Question 4

Atria

Answer 4

upper chamber of the heart where blood enters

Question 5

Ventricles

Answer 5

chamber that receives blood

Question 6

Interatrial septum

Answer 6

portion of the septum that separates the two upper chambers

Question 7

Superior venae cavae

Answer 7

great venous trunks that return deoxygenated blood from the systemic circulation to the right atrium of the heart

Question 8

inferior venae cavae

Answer 8

large vein that carries deoxygenated blood from the lower and middle body into the right atrium of the heart

Question 9

Pulmonary arteries

Answer 9

carries deoxygenated blood from the right ventricle to the lungs

Question 10

Pulmonary veins

Answer 10

One of four vessels that carry aerated blood from the lungs to the left atrium of the heart

Question 11

Aorta

Answer 11

main organ in the human body

Question 12

Atrioventricular valves

Answer 12

allows blood to pass from atrium to ventricle and closes to prevent back flow when the ventricle contracts

Question 13

Bicuspid valves

Answer 13

It permits blood to flow one way only, from the left atrium into the left ventricle

Question 14

Tricuspid valves

Answer 14

One of the four heart valves, the first one that blood encounters as it enters the heart

Question 15

Chordae tendineae

Answer 15

small muscles within the heart that serve to anchor the valves

Question 16

Semilunar valves

Answer 16

prevents blood from flowing from the aorta back into the heart

Question 17

Coronary arteries

Answer 17

vessels that supply the heart muscle with blood rich in oxygen

Question 18

Cardiac veins

Answer 18

any of the veins returning the blood from the tissues of the heart that open into the right atrium either directly or through the coronary sinus

Question 19

Coronary sinus

Answer 19

a venous channel that is derived from the sinus venosus, is continuous with the largest of the cardiac veins, receives most of the blood from the walls of the heart, and empties into the right atrium

Question 20

Sinoatrial node

Answer 20

small mass of specialized cardiac muscle fibers located in the posterior wall of the right atrium of the heart that acts as a pacemaker of the cardiac

Question 21

Purkinje fibers

Answer 21

Any of the specialized cardiac muscle fibers, part of the impulse-conducting network of the heart

Question 22

Pacemaker

Answer 22

small electric device that keeps the heart beating

Question 23

Systole

Answer 23

period of contraction of the ventricles of the heart that occurs between the first and second heart sounds of the cardiac cycle

Question 24

Diastole

Answer 24

part of the cardiac cycle during which the heart refills with blood after the emptying done during systole