Asked by: Bobby Stone
What is the function of the pectoralis muscle?
Its major actions are adduction, or depression, of the arm (in opposition to the action of the deltoideus muscle) and rotation of the arm forward about the axis of the body. When the raised arms are fixed (as in mountain climbing), it assists the latissimus dorsi and teres major muscles in pulling the trunk up.
What exercise works the pectoralis major?
If you have access to a gym, swap out your push-ups for the barbell bench press. According to research from 2012 sponsored by the American Council on Exercise (ACE), this exercise resulted in the most muscle activation in the pectoralis major.
What are the pectoral muscles?
The pectoralis major muscle is a large muscle in the upper chest, fanning across the chest from the shoulder to the breastbone. The two pectoralis major muscles, commonly referred to as the ‘pecs,’ are the muscles that create the bulk of the chest.
What kind of muscle is the pectoralis major?
triangular convergent muscle
The pectoralis major (from Latin pectus ‘breast’) is a thick, fan-shaped or triangular convergent muscle, situated at the chest of the human body. It makes up the bulk of the chest muscles and lies under the breast. Beneath the pectoralis major is the pectoralis minor, a thin, triangular muscle.
What does the pectoralis major muscle do quizlet?
What does the pectoralis major muscle do? It adducts the arm.
What action does the pectoralis minor perform?
Function. The primary actions of this muscle include the stabilization, depression, abduction or protraction, internal rotation and downward rotation of the scapula.
Where is the pectoralis minor muscle?
Pectoralis minor muscle (/ˌpɛktəˈrælɪs ˈmaɪnər/) is a thin, triangular muscle, situated at the upper part of the chest, beneath the pectoralis major in the human body.
How do you activate pec minor?
Just gently and roll in and down towards the feet making sure the hand is also rolling inward.