Shoulder Flexion

Deltoid
Posted On July 20 2019. Updated On July 20 2019.
The deltoid muscle is a major flexor of the shoulder joint, the muscle is innervated by axillary nerve from the the C4-C5.
Pectoralis Major
Posted On July 20 2019. Updated On July 20 2019.
The pectoralis major is a thick, fan-shaped muscle, situated at the chest (anterior) of the body. It makes up the bulk of the chest muscles in the male and lies under the breast in the female.