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Muscles of the arm. Labels: 58, biceps; 59, triceps.

Muscles of the Arm

Muscles of the arm. Labels: 58, biceps; 59, triceps.

Diagram of the muscles of the arm in action. Labels: 1, humerus; 2, ulna, 3, biceps muscle; 4, attachment to the humerus; 6, triceps muscle; 7, tendon; 8, a ball to be moved. 9, 10, 11, direction the ulna moves when the biceps muscle contracts. When the triceps muscle contracts, the forearm extends.

Arm Muscles in Action

Diagram of the muscles of the arm in action. Labels: 1, humerus; 2, ulna, 3, biceps muscle; 4, attachment…

The muscles of the back of the arm, forearm, and hand.

Back View of Arm Muscles

The muscles of the back of the arm, forearm, and hand.

The superficial muscles of the arm and forearm.

Front View of Arm Muscles

The superficial muscles of the arm and forearm.

Horizontal section at middle of right arm. Labels: B.V., basilic vein; CEPH. V., cephalic vein; I.C.N. internal cutaneous nerve; I.P.A., inferior profunda artery; M.C.N., musculocutaneous nerve; M.N., median nerve; M.S.N., musculospiral nerve; S.P.A., superior profunda artery; U.N., ulnar nerve.

Horizontal Section of Arm

Horizontal section at middle of right arm. Labels: B.V., basilic vein; CEPH. V., cephalic vein; I.C.N.…

The posterior all of the axilla and the front of the arm (biceps being divided).

Muscles and Nerves of the Arm

The posterior all of the axilla and the front of the arm (biceps being divided).

Transverse section through the middle of the right forearm, in the position of semipronation.

Transverse Section Through Arm

Transverse section through the middle of the right forearm, in the position of semipronation.

Second layer of muscles of the back. Labels: 1, trapezius; 2, a portion of the ten dinous ellipse formed by the trapezius on both sides; 3, spine of scapula; 4, latissimus dorsi; 5, deltoid; 6, infra-spinatus and teres minor; 7, external oblique; 8, gluteus medius; 9, gluteus magnus; 10, levator scapulae; 11, rhomboideus minor; 12, rhomboideus major; 13, splenius capitis; 14, splenius colli; 15, portion of origin of latissimus dorsi; 16, serratus inferior posticus; 17, supra-spinatus; 18, infra-spinatus; 19, teres minor; 20, teres major; 21, long head of triceps extensor cubiti; 22, serratus major anticus; 23, internal oblique.

Muscles of the Back

Second layer of muscles of the back. Labels: 1, trapezius; 2, a portion of the ten dinous ellipse formed…

A diagram showing the muscular cycle form by the biceps or flexor muscle, and the triceps or extensor muscle of the human arm.

Muscular Cycle of the Biceps

A diagram showing the muscular cycle form by the biceps or flexor muscle, and the triceps or extensor…

Outer layer of muscle on the back of the forearm. Labels: 1, biceps flexor; brachialis internus; 3, triceps extensor; 4, supinator radii longus; 5, extensor carpi radialis longior; 6, extensor carpi radialis brevior; 7, tendinous insertions of these muscles; 8, extensor communis digitorum; 9, extensor communis digitorum; 9, extensor communis digitorum; 10, extensor carpi ulnaris; 13, extensor minor pollicis; 14, extensor major pollicis; 15, posterior annular ligament.

Muscles of the Forearm

Outer layer of muscle on the back of the forearm. Labels: 1, biceps flexor; brachialis internus; 3,…

Outer layer of muscles on the front of the forearm. Labels: 1, biceps flexor cubiti; 2, brachialis internus; 3, triceps; 4, pronator radii teres; 5, flexor carpi radialis; 6, palmaris longus; 7, flexor sublimus digitorum; 8, flexor carpi ulnaris; 9, palmar fascia; 0, palmaris brevis muscle; 11, abductor pollicis manur; 12, flexor brevis pollicis manus; 13, supinator longus; 14, extensor ossis metacarpi pollicis.

Muscles of the Forearm

Outer layer of muscles on the front of the forearm. Labels: 1, biceps flexor cubiti; 2, brachialis internus;…

The superficial muscles of the back of the forearm.

Muscles of the Back Forearm

The superficial muscles of the back of the forearm.

Muscles on the dorsum of the scapula and triceps.

Muscles of the Scapula and Triceps

Muscles on the dorsum of the scapula and triceps.

Shown are the muscles of the deltoid region and back of the arm

Back View of Shoulder Muscles

Shown are the muscles of the deltoid region and back of the arm

Shown are the muscles of the posterior wall of the axilla and the front of the arm (the biceps being divided).

Front View of Shoulder Muscles

Shown are the muscles of the posterior wall of the axilla and the front of the arm (the biceps being…