Ask this in the physics area next time please, but turn to someone you trust or if your young an adult, like your parents or your teachers. Maybe even your friends. No matter what age tell someone and if they don't know then get medical help if they can't.
Answer:
A. Epicardium
B. Myocardium
C. Endocardium
D. Interventricular septum
E. Superior vena cava
F. Inferior vena cava
G. Right atrium
H. Tricuspid valve
I. Trabeculae carneae
J. Pulmonary semilunar valve
K. Pulmonary trunk
L. Left pulmonary veins
M. Left atrium
N. Mitral (bicuspid) valve
O. Left ventricle
P. Aortic semilunar valve
Explanation:
True. married people are more likely to be depressed than unmarried people