Cardiovascular System

Question 1

mitral valve

Answer 1

connects the left atrium, where the pulmonary veins enter, with the left ventricle

Question 2

tricuspid valve

Answer 2

connects the right atrium, where the vena cava connects, to the right ventricle

Question 3

pulmonary valve

Answer 3

connects the right ventricle to the pulmonary artery

Question 4

aortic valve

Answer 4

connects the left ventricle to the aorta

Question 5

each side of the heart’s function

Answer 5

left side—distributes blood to the body
right side—distributes blood to the lungs

Question 6

sinoatrial node

Answer 6

the pacemaker; located in the right atrium
when activated, the upper chambers begin to contract

Question 7

atrioventricular node

Answer 7

located between the upper chambers of the heart
slower electrical signal; gives time for ventricles to fill after atriums contract

Question 8

bundle of His

Answer 8

extends from AV node down the center of the heart

Question 9

Purkinje fibers

Answer 9

extend from the bundle of His
cause ventricles to contract

Question 10

electrical rhythm of heart

Answer 10

SA node—atrial contraction (systole)
AV node—delay
bundle of His—carries signal
Purkinje fibers—ventricular contraction (systole)

Question 11

carotid artery and jugular veins

Answer 11

travel up the neck

Question 12

brachial artery and basilic vein

Answer 12

arm vessels

Question 13

subclavian artery

Answer 13

branch from aorta and supply the arms; below the clavicle

Question 14

sinus of valsava

Answer 14

dilation of the ascending aorta that connects to the aortic valve