A

Fibrous pericardium
B

Parietal layer of serous pericardium
C

Pericardial cavity
D

Visceral layer of serous pericardium (epicardium)
E

Fibrous pericardium
F

Parietal layer of serous pericardium
G

Pericardial cavity
H

Visceral layer of serous pericardium (epicardium)
I

Myocardium
J

Endocardium
K

Heart wall
1

Simple squamous epithelium
2

Areolar connective tissue and fat
3

Myocardium (cardiac muscle)
4

Endothelium (areolar connective tissue and endothelium)
5

Epicardium (visceral layer of serous pericardium)
A?

Branches of the right pulmonary artery
B?

Ascending aorta
C?

Right pulmonary vein
D?

Auricle of right atrium
E?

Right atrium
F?

Right coronary artery (in coronary sulcus)
G?

Marginal artery
H?

Right ventricle
I?

Apex of heart
J?

Left ventricle
K?

Anterior interventricular artery
KK?

In anterior interventricular sulcus (anterior interventricular artery)
L?

Left coronary artery
M?

Auricle of left atrium