Heart wall

Question 1

What are the 3 main layers of the heart wall? (From insider layer)

Answer 1

Endocardium
Myocardium
Epicardium

Question 2

What type of epithelium line the endocardium?

Answer 2

Simple squamous epithelial

Question 3

What thin layer is found between the endocardium and myocardium? What is found in this layer?

Answer 3

Subendocardium layer. Contains layers of loose fibrous connective tissue. Vessels and nerves of the heart. Purkinge fibres found here. Damage can cause arrythmias

Question 4

What muscle types are found in the myocardium?

Answer 4

Cardiac muscle and involuntary striated muscle

Question 5

What is the layer between the myocardium and the epicardium?

Answer 5

Subepicardial layer

Question 6

What does the epicardial layer of the heart derive from?

Answer 6

The visceral layer of the pericardium.

Question 7

What is the epicardium composed of?

Answer 7

Connective tissue and fat

Question 8

What lines the outer surface of the epicardium?

Answer 8

Simple squamous epithelial cells