11 Cardiovascular system vocab

Question 1

atrioventricular bundle (bundle of His)

Answer 1

muscles fibers connecting the atria with the ventricles and transmitting electrical impulses between them

Question 2

atrioventricular node (AV node)

Answer 2

tissue in the wall between the atria. Electrical impulses pass from sa node through the av node and the bundle of his to the ventricles

Question 3

capillary

Answer 3

smallest vessel, materials pass to and from the bloodstream through the thin capillary walls

Question 4

endocardium

Answer 4

inner lining of the heart

Question 5

endothelium

Answer 5

innermost lining of the blood vessels

Question 6

mitral valve

Answer 6

left atrium, left ventricle bicuspid

Question 7

murmur

Answer 7

abnormal swishing sound caused by improper closure of the hear valves

Question 8

myocardium

Answer 8

muscular, middle layer of the heart

Question 9

normal sinus rhythm (NSA)

Answer 9

heart rhythm originating in the sinoatrial node with a resting rate of 60-100 bpm

Question 10

sinoatrial node (pacemaker)

Answer 10

specialized nervous tissue in the right atrium that begins the heartbeat. artificial cardiac pacemaker is an electronic apparatus that stimulates heart muscle that is weak and not functioning

Question 11

pericardium

Answer 11

double-layered membrane surrounding the heart

Question 12

sinoatrial node (SA node)

Answer 12

pacemaker of the heart

Question 13

tricuspid valve (bicuspid)

Answer 13

right atrium and right ventricle