Chapter 20- Heart and Neck Vessels Flashcards Preview

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Flashcards in Chapter 20- Heart and Neck Vessels Deck (111)
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1

Area in anterior chest overlying heart and great vessels

Precordium

2

How many chambers does the heart have?

4
2 ventricles, 2 atria

3

Major arteries and veins connected to the heart

Great vessels

4

Blood vessels arranged in 2 continuous loops:

Pulmonary circulation and systemic circulation

5

3 layers of the heart wall:

Pericardium: tough, fibrous, double-walled sac that surrounds and protects heart

Myocardium: muscular wall of heart; does the pumping

Endocardium: thin layer of endothelial tissue that lines inner surface of heart chambers and valves

6

Heart has how many pump systems?

2

7

Thin-walled reservoir for holding blood.

Atrium

8

Thick-walled, muscular pumping chamber

Ventricle

9

Valves are___.

unidirectional. and they open/close passively in response to pressure gradients in moving blood.

10

4 valves in heart:

2 atrioventricular (AV) valves
2 semilunar (SL) valves

11

What are the names of the 2 AV valves that seperate the atria and ventricles:

Triscupid valve: right AV valve
Bicuspid or mitral valve: left AV valve

12

AV valves open during ____.

diastole. during the hearts filling phase to allow ventricles to fill with blood.

13

AV valves close during ___.

Systole (pumping phase) to prevent regurgitation of blood back up into atria.

14

SL valves have __ cusps that look like half moons.

3

15

SL valve in right side of heart

Pulmonic valve

16

SL valve in left side of heart

Aortic valve

17

__ valves are present between vena cava and right atrium, or between pulmonary veins and left atrium.

NONE, 0.

18

Abnormally high pressure in ___ side of heart gives a patient symptoms of pulmonary congestion.

Left

19

Abnormally high pressure in ___ side of heart shows in neck veins and abdomen.

Right

20

___ blood drains into vena cava, following route of venous blood.

Unoxygenated

21

Blood goes from liver to ___ through inferior vena cava.

Right atrium

22

From RV, venous blood flows through ___ to pulmonary artery.

Pulmonic valve

23

__ oxygenate blood.

Lungs

24

From LA, arterial blood travels through __ valve to the __.

mitral
Left Ventricle

25

LV delivers blood to the ___.

Aorta.

26

Aorta delivers ___ blood to body.

oxygenated

27

__ is continuous loop; moving by continuous shifting pressure gradients.

Circulation

28

ventricles relax and fill with blood; 2/3 of cardiac cycle

Diastole

29

protodiastolic filling is the ___, where blood puts rapidly into the ventricles.

first/early passive phase

30

Presystole or atrial systole is also called the ___. this is when the atria contracts and pushes the last amount of blood into the ventricles.

atrial kick.