Chapter 20 Cardiovascular Flashcards Preview

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Flashcards in Chapter 20 Cardiovascular Deck (111)
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1

Blood

maintains homeostasis by moving, heart moves the blood
Heart beats 100,000 times per day, enough to fill 40- 55 drums

2

Pulmonary Circuit

transports blood to/from lungs back to heart

3

Systemic Circuit

transports blood to and from the rest of the body

4

Coronary Circuit

transport blood to provide nutrients to cardiac cells

5

arteries(efferent vessels)

carries blood away from heart, normally carries 02

6

veins (afferent vessels)

carries blood back to heart, normally C02

7

small thin membrane vessel, also called exchange vessels because these exchange gases with the cells

capillaries

8

Location of the Heart

located near anterior chest wall, slightly to left of mid-line, apex inferior part of heart, base superior part of heart

9

The Heart consists of

1. Outer covering
2. Inner walls
3. Chambers
4. Valves

10

Outer covering of heart

Pericardium

11

The Pericardium is made up of 2 membranes

Fibrous membrane
Serous membrane

12

forms the superficial layer, made up of dense irregular tissue

Fibrous membrane

13

thinner more delicate layer, made up of two sublayers:

Serous Membrane

14

Parietal layer- layer directly under fibrous layer, lines the inner surface of pericardial sac
Serous viscersal- innermost layer, also called epicardium cover the out surface of the heart

Serous membrane sublayers

15

the area between Parietal layer and serous visceral layer

Pericardial cavity

16

fills the area between (pericardial cavity) these two linings to reduce friction as the heart beats

Pericardial fluid

17

Heart Wall Has 3 Layers

Epicardium
Myocardium
Endocardium

18

Epicardium

outer layer heart, also called Serous visceral layer

19

Myocardium

muscular wall of heart that forms atria and ventricles, middle layer, made up of cardiac muscle (involantary striated)

20

Endocardium

inner layer made up of simple squamous, covers tendons and valves

21

connected by "intercalated disks" (double membrane that connects two adjacent cells which allows the contraction command to be passed from cell to cell through gap junctions. Smaller then skeletal muscle cells, has single centrally located nucleus, branching connections between cardiac cells.

Cardiac muscle cells

22

receives blood from systemic circuit and passes to right ventricle

Right Atrium

23

pumps blood into pulmonary circuit

Right Ventricle

24

receives blood from pulmonary circuit and passes to left ventricle

Left atrium

25

transports blood to systemic circuit

Left Ventricle

26

Right Ventricles and Left Ventricles

contract they eject equal volumes of blood

27

What do the anterior interventricular sulcus and posterior interventricular sulcus separate?

The left and right vetricles

28

What is an expandable extension of an atrium?

Auricle

29

Deep groove between atria and ventricles usually filled with fat?

Coronary Sulcus

30

Receives blood from two great veins, the superior vena cava, and the inferior vena cava.

Right Atrium