Heart

1

Ascending aorta

2

Superior vena cava

3 and 4 and 5

Right auricle, right atrium, right ventricle

6

Pulmonary trunk

7 and 8

Left auricle, left centricle

9

Apex

1

Right atrium

2

Right atrioventricular (tricuspid) valve

3

Right ventricle

4

Left atrium

5

Left atrioventricular valve (mitral)

6

Left ventricle

7

Interventricular septum

1

Right pulmonary surface and border

2

Left pulmonary surface and border

3

Anterior surface

4

Superior border

1

Left pumlonary artery

2

Left pulmonary veins

3

Base

4

Ascending aorta

5

Superior vena cava

6

Right pulmonary artery

7

Right pulmonary veins

8

Inferior vena cava

1

Right atrioventricular (tricuspid) valve)

2

Chordae tendineae

3

Papillary muscle

1

Pulmonary trunk

2

Pulmonary valve

3

Conus arteriosus

Apex

points forward, dowards to the left and is mainly formed by the inferior and lateral portion of the left ventricle

Base of the heart

opposite to the apex on the heart’s posterior aspect and is formed mainly by the left atrium and some of the right atrium

Right atrium

receives deoxygenated blood from superior vena cava, the inferior vena cava and the coronary sinus and has an expandable pouch called the right auricle

Right ventricle

cone shaped chamber which receives deoxygenated blood from the right atrium through a one way valve called the tricuspid valve

Upper part of the right ventricel

tapers to the conus arteriosus then pumps blood into the pulmonary trunk through the pulmonary valve

Left atrium

oxygenated blood from the pulmonary veins and has an expandable pouch called the left auricle

Left ventricle

slightly larger than the right ventricle and receives oxygenated blood from the left atrium through a one way valve called the mitral valve