Ch 12: Online 3

Question 1

Prevents friction between pericardial layers

Answer 1

Serous fluid

Question 2

Electrically insulates the ventricles from the atria

Answer 2

Fibrous skeleton

Question 3

Contraction of chambers of the heart

Answer 3

Systole

Question 4

Relaxation of chambers of the heart

Answer 4

Diastole

Question 5

Lack of blood in a body part

Answer 5

Ischemia

Question 6

Narrowing of a blood vessel

Answer 6

Stenosis

Question 7

Very rapid and uncoordinated heartbeats

Answer 7

Fibrillation

Question 8

The extra volume the heart can pump when necessary

Answer 8

Cardiac reserve

Question 9

Fibrous strings to the Artioventricular (AV) valve flaps

Answer 9

Chordae tendineae

Question 10

The more the ventricles are stretched, the more forcefully they contract.

Answer 10

Starlings law

Question 11

The vessels of the myocardium

Answer 11

Coronary

Question 12

The sequence of events in one heartbeat

Answer 12

Cardiac cycle

Question 13

The volume of blood pumped by a ventricle per heartbeat

Answer 13

Stroke volume

Question 14

Heart rate

Answer 14

Pulse

Question 15

Myocardium that anchors the Atrioventricular (AV) valve flaps

Answer 15

Papillary Muscles

Question 16

The outermost membrane around the heart

Answer 16

Fibrous pericardium

Question 17

The lining of the chambers of the heart

Answer 17

Endocardium

Question 18

Death of part of the cardiac muscle

Answer 18

Myocardial infarction

Question 19

More rapid heart rate

Answer 19

Tachycardia

Question 20

Slower heart rate

Answer 20

Bradycardia

Question 21

The volume of blood pumped by a ventricle in one minute

Answer 21

Cardiac output

Question 22

A recording of the electrical changes that accompany the cardiac cycle

Answer 22

Electrocardiogram (ECG)

Question 23

A peptide produced by the atria that increases sodium excretion

Answer 23

Atrial natriuretic

Question 24

Pulmonary and aortic

Answer 24

Semilunar valves

Question 25

Bicuspid or tricuspid valve

Answer 25

Atrioventricular