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Pulmonary circulation

Right side of the heart

1

Systemic circulation

Left side of heart

2

Functions of the heart

Generating BP
Routing blood
One way blood flow
Regulating blood supply

3

Pericardium

Double-layered closed sac that surrounds the heart

4

Pericarditis

Inflammation of serous pericardium

5

Cardiac tamponade

Large volume of fluid or blood accumulates in pericardial cavity and compresses the heart from the outside

6

Fibrous pericardium

Tough, fibrous connective tissue outer layer

7

Serous pericardium

Thin, transparent inner layer

8

Function of fibrous pericardium

Prevents overdistension of heart and anchors it within mediastinum.

9

Parietal pericardium

Serous pericardium lining fibrous pericardium

10

Visceral pericardium

Serous lining that covering surface of heart

11

Pericardial cavity

Space between visceral and pericardia, filled with pericardial fluid

12

Function of pericardial fluid

Reduce friction as heart moves in pericardial sac

13

3 layers of heart wall

Epicardium, myocardium, endocardium

14

Epicardium

Thin serous membrane. Smooth outer surface of heart

15

Myocardium

Thick, middle layer of heart. Cardiac muscle

16

Endocardium

Smooth, inner surface of the heart chambers

17

Pectinate muscles

Muscular ridges in auricles and right atrial wall

18

Crista terminalis

Ridge separate pectinate muscles from smooth atrial wall

19

Trabeculae carneae

Interior walls of ventricles. Large muscular ridges and columns

20

Auricles

Extensions of atria that be seen anteriorly between each atrium and ventricle

21

Superior and inferior vena cava

Carry blood to right atrium

22

Four pulmonary veins

Blood from lungs to left atrium

23

Two arteries that exit heart

Aorta, pulmonary trunk

24

Coronary sulcus

Runs obliquely around the heart, separates atria from ventricles

25

Anterior and posterior interventricular sulcus

Division between left and right ventricles

26

Right and left coronary arteries

Supply heart. Lie within coronary sulcus and interventricular sulci

27

Anastomoses

Direct connection between arteries of heart

28

Coronary sinus

Veins from heart itself drain into here, then right atrium

29

Right atrium openings

Superior/inferior vena cava and coronary sinus