Give the brief information about heart wall ❤
Answers
The heart is a muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system. Blood provides the body with oxygen and nutrients, as well as assisting in the removal of metabolic wastes. In humans, the heart is located between the lungs, in the middle compartment of the chest.
heart wall
The heart is mesodermal in origin. Its wall
is formed of three layers, outer epicardium,
middle myocardium and inner endocardium.
Epicardium is thin and formed of a single
layer of flat squamous epithelium resting
on basement membrane. Myocardium is the
middle thick layer formed of cardiac muscles.
Endocardium is a single thin layer formed of
squamous epithelium. The epicardium and
endocardium are protective in function whereas
myocardium is responsible for contraction and
relaxation of heart.