Friedman- Cardiovascular - Sheet1 Flashcards Preview

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Flashcards in Friedman- Cardiovascular - Sheet1 Deck (25):
1

Function

Transportation of: oxygen & carbon dioxide, nutrients, hormones, ions.

2

location of heart

thoracic cavity

3

Apex

creates the cardiac notch in the lungs; rests on the diaphragm (bottom)

4

base

broad superior port of the heart where the blood vessels leave/enter heart (top)

5

cardiac notch in lungs

only on left side; where apex rests

6

layers of heart

epicardium/pericardium, myocardium, endocardium

7

epicardium/pericardium

holds heart in place; double wall sac that surrounds the heart

8

myocardium

pumps the blood; cardiac muscle layer

9

endocardium

glossy tissue; inner layer that lines the heart chambers

10

Artery

blood LEAVES heart; aorta/pulmonary trunk branch to arteries

11

Vein

blood ENTERS heart; superior/inferior vanae cavea & right/left pulmonary veins

12

Atrium (atria) chambers

ENTRANCE from veins; superior portion of heart; not important for pumping blood

13

Ventricle chambers

EXIT out blood into circulation; inferior portion of heart; pumps heart (pulmonary & systemic)

14

side of heart with oxygen rich blood

left side

15

systemic circulation

(left) cycle of pumping oygen rich blood to the appropriate tissues of the body

16

Pulmonary circulation

(right) pumps blood to the lungs

17

left ventricle

high levels of myochondrium (very thick) > it can push blood through systemic circulation

18

Right Atrium

Received blood from superior and inferior venae cavae

19

Right Ventricles

Pumps blood into pulmonary trunk-branches to form pulmonary arteries for each lung

20

Left Atrium

Receives blood from pulmonary vein (rich in oxygen)

21

AV (atrioventricular valve)

between atria and ventricles-prevents backflow to atria when ventricles contract

22

Semilunar valves

guards the base of the two arteries

23

Cardiac cells

do not require nerve impulse to contract

24

contaction of heart uses

intrinsic conduction system/nodal system-sympathetic & parasympathertic nervous system

25

intrinsic conduction

system built into the heart-causes depolarization of the heart muscle