lateral rotation of humerus (upper arm)
The pectoralis muscle.
Subscapularis muscle
infraspinatus muscle
the answer isD. Infraspinatus
is a muscle in the rotator cuff that assists the moving of the shoulder
Infraspinatus.
The Infraspinatus is one of the four rotator cuff muscles in the shoulder that helps to stabilize and rotate the arm. A tendon is where the muscle attaches to bone. Tendinopathy is a general term meaning injury or disease to a tendon. So Infraspinatus tendinopathy would mean some kind of damage or disease to the Infraspinatus muscle near the area where it attaches to the bone.
1- Supraspinatus and its function is to abduct the arm ,and it's innervated by the Suprascapular nerve. 2- Infraspinatus muscle and its function is to externally rotate the arm ,and it's innervated by the Suprascapular nerve. 3- Teres minor muscle and its function is to externally rotate the arm ,and it's innervated by the Axillary nerve. 4- Subscapularis muscle and its function is to internally rotate the humerus ,and it's innervated by the Upper and Lower subscapular nerve.
There are more than one: The deltoid, supraspinatus, infraspinatus, teres major and minor and the subscapularis.
Skeletal Muscles.
heart muscle
muscle fibers contracting