The interossei muscles are found on the palmar and dorsal (back of hand) aspects of the hand. Dorsal interossei act to abduct or spread the fingers apart from the middle finger. The palmar interossei act to adduct or bring the fingers back toward the middle finger. Both sets of intero...
The middle portion of the deltoid and the supraspinatus muscles work together to abduct your shoulder joint, moving your arm sideways away from your body. The former muscle attaches to the top of the acromion, just above your shoulder joint, on one end and to the top outside portion of the...
What is its action on the arm or shoulder joint? What is its action on the forearm or elbow joint? What are the primary actions of the muscles found in the compartment of the anterior forearm? What is the action of the triceps brachii?
The primary function of this muscle is the movement of the upper extremities in collaboration with the teres major and pectoralis major. These muscles work together to adduct, rotate, and extend the arm at the glenohumeral joint. While the lats are active in moving the upp...
The pushup is a basic movement that primarily works the pectoralis major of the chest, which is a two-headed muscle group comprised of an upper and lower head. The pushup also works several other muscles, all of which act as assisting movers during the movement. These muscles are the ante...
The primary function of your pectoral muscles is to adduct your arms, or pull them towards the midline of your body from various angles.Here, we break down the anatomy of your chest muscles, plus how to target each to make them bigger and stronger....
What does the long head of the triceps do? The main function of the three heads of the triceps muscle, which include the long, lateral, and medial heads, isforearm extension, or straightening the arm. The muscle also works to adduct and extend the upper arm. ...
or breastbone. The pectoralis major also attaches to the humerus, or long bone of the upper arm. This muscle is used to flex, or raise and lower, the shoulder. The pectoralis muscles also rotate the shoulder inward and adduct, or bring the shoulder inward, toward the center of the body...