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What muscles adduct the arm?
The pectoralis major, teres major, lastissimus dorsi, and the carica adduct and medially, or internally, rotate the humerus.
What muscles internally rotate shoulder?
Lat. dorsi Pec major Subscapularis
What muscles abducts the humerus?
The major muscle that abducts the humerus is the Deltoid. (all muscles move in conjuction, there may be more muscles that contribute to the abduction of the humerus) pectoralis major and latissimus dorsi
Which structure does the radius rotate upon?
humerus
What 3 muscles that rotate the humerus?
latissimus dorsi, supra spinatus , infra spinatus , teres minor , pectoralis major, teres major, brachialis , coracobrachialis, brachioradialis, pronator teres, common origin of flexors, extensor carpi radialis longus, common origin of extensors,
What muscles are involved in lateral rotation of the humerus?
The rotator cuff muscles: Supraspinatus Infraspinatus Teres Minor Supscapularis Easily remembered as SITS.
What abducts the humerus?
The major muscle that abducts the humerus is the Deltoid. (all muscles move in conjuction, there may be more muscles that contribute to the abduction of the humerus) pectoralis major and latissimus dorsi
The flexor and pronator muscles originate on the?
humerus
What are the muscles that contribute to the rotator cuff?
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.
The extrinsic muscles of the hand orignate on the?
lateral epicondyle of the humerus
How many muscles attach to the lesser tubercle of the humerus?
2
What muscle originates on the anterior surface of the scapula and inserts on the proximal anterior humerus?
The subscapularis muscle originates on the anterior surface of the scapula and inserts on the proximal anterior humerus. Its function is to rotate the head of the humerus medially.
