Question

Which one of the following is a correct statement regarding human heart?

Options

• Myocardium is responsible for contraction and relaxation of heart.

• Epicardium is non protective in function.

• Endocardium is made up of ciliated squamous epithelial cells.

• Heart is endodermal in origin.

Answer 1

Myocardium is responsible for contraction and relaxation of heart.

Explanation:

• The epicardium and endocardium serve protective functions.
• The endocardium is a single thin layer formed of squamous epithelium.
• The heart is mesodermal in origin.