lecture 1.2

Question 1

the ___ ___ attach papillary muscles to “AV” valves

Answer 1

chordae tendineae

Question 2

the ___ cells produce electrochemical impulses to stimulate cardiac muscle contraction

Answer 2

autoregulatory

Question 3

the ___ node initiates heartbeats

Answer 3

sinoatrial

Question 4

the SA node stimulates ___ contraction

Answer 4

atrial

Question 5

the SA node is also known as the ____ of the heart

Answer 5

pacemaker

Question 6

the ___ node stimulates ventricular contraction

Answer 6

atrioventricular

Question 7

the perkinje fibers carry AV node impulse through ___ and ____

Answer 7

septum/ apex

Question 8

the protection for the cardio system includes ribs, sternum, ___ sac and ___

Answer 8

pericardial/ pericardium

Question 9

the percardium consists of ___ and __ layer

Answer 9

fibrous/ serous

Question 10

the epicardium consists of __ and __ layer

Answer 10

parietal/ visceral

Question 11

the pericardial cavity is between ___ layers

Answer 11

serous

Question 12

the pericardial fluid provides

Answer 12

lubrication

Question 13

___ node initiates heartbeat with impulse

Answer 13

SA

Question 14

after the SA node sends an impulse, the __ contracts simultaneously

Answer 14

atria

Question 15

After the atria contracts, the impulse stimulates the ___ node

Answer 15

AV

Question 16

After the AV node is stimulates, it sends an impulse through ___ ___

Answer 16

perkinje fibers

Question 17

After the perkinje fibers are stimulated, both ventricles contract simultaneously from ___

Answer 17

apex

Question 18

when the heart muscle contracts it is called ___

Answer 18

systole

Question 19

when the heart muscle relaxes it is called ___

Answer 19

diastole

Question 20

during atrial systole, the ___ __ & ___ ___ close

Answer 20

vena cava/ pulmonary veins

Question 21

during atrial systole the ___ valves open

Answer 21

atrioventricular

Question 22

during ventricular systole the ___ valves close

Answer 22

AV

Question 23

during ventricular systole the ____ valves open

Answer 23

semilunar