The myocardium is Select one a the major portion of the hear

The myocardium is

Select one:

a. the major portion of the heart.

b. largely cardiac muscle tissue.

c. endocardium.

d. Both the major portion of the heart and largely cardiac muscle tissue.

Which are the strongest pumping chambers?

Select one:

a. atria

b. ventricles

Solution

Answer1:- Option d is correct

Explanation :-Myocardium is the major portion of heart and is made up of largely cardiac muscle tissue. Its the middle layer between epicardium and endocardium.

Answer 2:- Option b is correct

Explanation :-The strongest pumping chambers of heeart are ventricles. Left ventricle is the strongest because it has to pump blood to all parts of body.