Chapter 11: Circulatory System II: Heart and Pumping

Question 1

Organ responsible for pumping blood.

Answer 1

Heart

Question 2

Primary tissue of which hearts are composed.

Answer 2

Cardiac Muscle

Question 3

Largest artery in the body, serving to feed systemic circulation.

Answer 3

Aorta

Question 4

Largest vein in the body, serving to drain systemic circulation.

Answer 4

Vena cava

Question 5

Major vein draining the head and the front limb or arm end of the body.

Answer 5

Superior vena cava

Question 6

Major vein draining the tail and the rear limb or legs end of the body.

Answer 6

Inferior vena cava

Question 7

Major pumping chamber of hearts.

Answer 7

Ventricle (heart)

Question 8

Major pumping chamber of pulmonary circulation.

Answer 8

Right ventricle

Question 9

Major pumping chamber of systemic circulation.

Answer 9

Left ventricle

Question 10

Initial but less essential pumping chamber of hearts.

Answer 10

Atrium

Question 11

Initial but less essential pumping chamber of pulmonary circulation.

Answer 11

Right atrium

Question 12

Initial but less essential pumping chamber of systemic circulation.

Answer 12

Left atrium

Question 13

Means by which backflow of blood is prevented during the beating of the heart.

Answer 13

Heart valves

Question 14

Means by which backflow is prevented between ventricles and atria.

Answer 14

Atrioventricular valves (AV valves)

Question 15

Reversible partition between the left ventricle and the left atrium of the heart.

Answer 15

Bicuspid valve

Question 16

Reversible partition between the right ventricle and the right atrium of the heart.

Answer 16

Tricuspid valve

Question 17

Means by which backflow is prevented between ventricles and the major arteries that they feed with blood.

Answer 17

Semilunar valves

Question 18

The interior lining of the heart.

Answer 18

Endocardium

Question 19

The muscular layer of the heart.

Answer 19

Myocardium

Question 20

The outer, connective tissue layer making up the heart.

Answer 20

Epicardium

Question 21

Double-layer connective tissue sack that encloses the heart.

Answer 21

Pericardium

Question 22

Volume within animals containing the heart.

Answer 22

Pericardial cavity

Question 23

Specialized cardiac muscle cells that conduct action potentials between different parts of the heart to increase the coordination of the heart’s contraction.

Answer 23

Purkinje fibers

Question 24

Measure of blood flow through the ventricles.

Answer 24

Cardiac output

Question 25

The blood vessels that are directly responsible for supplying blood to cardiac muscle.

Answer 25

Coronary arteries

Question 26

Measure of the extent to which the beating of the heart results in a pushing of the circulating fluid against especially arterial walls.

Answer 26

Blood pressure

Question 27

Sudden increase in blood pressure associated with systole.

Answer 27

Pulse

Question 28

Interval over which the chambers in the heart fill with blood.

Answer 28

Diastole

Question 29

Minimum blood pressure recorded over a given interval during blood pressure determination.

Answer 29

Diastolic pressure

Question 30

Interval over which the heart is actively pumping blood.

Answer 30

Systole

Question 31

Maximum blood pressure recorded over a given interval during blood pressure determination.

Answer 31

Systolic pressure