there are two muscles with pectoralis in their name, Pectoralis Major and Pectoralis Minor. Pectoralis Major is the main muscle of the chest and pectoralis minor is deep to it (so you can't feel it because pectoralis major completely covers it)
pectoralis minor and subclavius muscle.
The heart is deep to the pectoralis major. That muscle is superficial to the heart.
No, it is not. It is the large chest muscle.
shoulder horizontal flexion
There are two muscles, the pectoralis minor and the pectoralis major.
The pectoralis is two muscles, major and minor, and they are both located on the chest.
the shin muscle
The largest chest muscle in a cat's body is the pectoralis minor. In humans, the largest chest muscle if the pectoralis major.
deltoids and tricep
pectoralis major and triceps