chapter 17 Flashcards Preview

A&P2 > chapter 17 > Flashcards

Flashcards in chapter 17 Deck (52)
Loading flashcards...
1

blood vessels that carry blood away from the heart

arteries

2

blood vessels returning blood to the heart

veins

3

where is the heart located?

in the mediastinum between the second rib and fifth intercoastal space

4

double walled sac that encloses the heart

pericardium

5

epithelial membrane that covers the pericardium

serosa

6

2 layers of the serosa

parietal layer
visceral layer

7

major veins of the heart

small cardiac vein
anterior cardiac vein
coronary sinus
great cardiac veins

8

major arteries of the coronary circulation

right and left coronary artery
marginal artery
circumflex artery
anterior and posterior interventricular artery

9

which side of the heart is the pump for the pulmonary circuit?

right heart

10

which side of the heart is the pump for the systemic circuit?

left heart

11

valves between the atria and ventricles

atrioventricular valves
AV valves

12

what connects smooth muscle cells and allows for ions to pass freely from cell to cell?

gap junctions

13

The pathway of blood from the heart to the lungs

Right atrium > tricuspid valve > right ventricle > pulmonary valve > pulmonary trunk > pulmonary arteries > lungs

14

Pathways of blood from the lungs through the heart

Lungs > pulmonary veins > left atrium > bicuspid valve > left ventricle > aortic valve > aorta > systemic circulation

15

Describe the cardiac muscle cells

striated, short, fat, branched, and interconnected

16

3 ion channels of cardiac muscles

1.Na+ channels for Na + inflow
2.K + channels for K + outflow
3.Ca2+ channels for Ca2+ inflow

17

what triggers the opening of Ca sensitive channels in the SR

Ca influx

18

where is the tricuspid valve located?

between the right atrium and ventricle

19

where is the mitral valve located?

between the left atrium and ventricle

20

to which side of the body is the apex of the heart pointed?

left hip

21

what marks the exterior boundary between the ventricles?

anterior and posterior interventricular sulcus

22

cardiac muscle tissue is found in which layer of the heart?

myocardium

23

valve between the right atrium and ventricle

tricuspid

24

valve between the left atrium and ventricle

bicuspid or mitral valve

25

the anterior surface of the heart consists mostly of what chamber?

right ventricle

26

structure that prevents prolapse of the atrioventricular valves

chordae tendineae

27

how does oxygenated blood return to the heart?

through the pulmonary veins

28

where blood goes when it is pumped out of the left ventricle?

aorta

29

what prevents blood from flowing back into the left ventricle?

aortic semilunar valve

30

where does deoxygenated blood from the myocardium enter the right atrium through?

the coronary sinus