Chapter 11: Circulatory System II: Heart and Pumping Flashcards Preview

Biology 1102 > Chapter 11: Circulatory System II: Heart and Pumping > Flashcards

Flashcards in Chapter 11: Circulatory System II: Heart and Pumping Deck (31):
1

Organ responsible for pumping blood.

Heart

2

Primary tissue of which hearts are composed.

Cardiac Muscle

3

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

Aorta

4

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

Vena cava

5

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

Superior vena cava

6

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

Inferior vena cava

7

Major pumping chamber of hearts.

Ventricle (heart)

8

Major pumping chamber of pulmonary circulation.

Right ventricle

9

Major pumping chamber of systemic circulation.

Left ventricle

10

Initial but less essential pumping chamber of hearts.

Atrium

11

Initial but less essential pumping chamber of pulmonary circulation.

Right atrium

12

Initial but less essential pumping chamber of systemic circulation.

Left atrium

13

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

Heart valves

14

Means by which backflow is prevented between ventricles and atria.

Atrioventricular valves (AV valves)

15

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

Bicuspid valve

16

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

Tricuspid valve

17

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

Semilunar valves

18

The interior lining of the heart.

Endocardium

19

The muscular layer of the heart.

Myocardium

20

The outer, connective tissue layer making up the heart.

Epicardium

21

Double-layer connective tissue sack that encloses the heart.

Pericardium

22

Volume within animals containing the heart.

Pericardial cavity

23

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

Purkinje fibers

24

Measure of blood flow through the ventricles.

Cardiac output

25

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

Coronary arteries

26

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

Blood pressure

27

Sudden increase in blood pressure associated with systole.

Pulse

28

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

Diastole

29

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

Diastolic pressure

30

Interval over which the heart is actively pumping blood.

Systole

31

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

Systolic pressure