Pectorals
No, it is not. It is the large chest muscle.
pectoral
diaphragm
pectorils MAINLY front delts and triceps, and to a lesser degree the pecs.
Yes it is.
m. teres minor and major
The heart you idiot!
Pectoralis major
diaphragm
The deepest muscle of the chest is the serratus anterior.
The largest chest muscle in a cat's body is the pectoralis minor. In humans, the largest chest muscle if the pectoralis major.
The diaphragm is the muscle separating the abdomen from the chest