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Muscles of the thorax and front of the arm.

Muscles of the Arm and Thorax

Muscles of the thorax and front of the arm.

Muscles of the thorax and front of the arm, showing some of the boundaries of the axilla.

Muscles of the Arm and Thorax

Muscles of the thorax and front of the arm, showing some of the boundaries of the axilla.

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 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).

Front of the left forearm showing superficial muscles.

Superficial Muscles of the Arm

Front of the left forearm showing superficial muscles.

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.

The biceps muscle and arm bones, to illustrate how, under ordinary circumstances, the elbow-joint is flexed when the muscle contracts.

The Biceps Muscle and Arm Bones

The biceps muscle and arm bones, to illustrate how, under ordinary circumstances, the elbow-joint is…

Biceps muscle attached to the radius.

Biceps Muscle and Radius

Biceps muscle attached to the radius.

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 deep muscles of the front of the forearm and hand.

Deep Muscles of the Front Forearm

The deep muscles of the front of the forearm and hand.

The superficial muscles of the back of the forearm.

Muscles of the Back Forearm

The superficial muscles of the back of the forearm.

Forms of muscles and tendons. Labels: A, adductor of thigh; B, biceps of arm; D, deltoid, G, gastrocnemius; P', pronator of forearm; P", pectoral; R, rectus abdominis; R", rectus muscle of thigh; S', serratus magnus of thorax; S", semi-membranosus of thigh.

Forms of Muscles and Tendons

Forms of muscles and tendons. Labels: A, adductor of thigh; B, biceps of arm; D, deltoid, G, gastrocnemius;…

"Shoulder bones and ligaments. 1. Humerus, 3. Scapula, 4. Tendon of biceps 5. Capsular ligament 6. Acromion 7. Coracoid process 8. Clavicle"—Finley, 1917

Shoulder bones and ligaments

"Shoulder bones and ligaments. 1. Humerus, 3. Scapula, 4. Tendon of biceps 5. Capsular ligament 6. Acromion…

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…

The posterior surface of the thigh with superficial muscles removed.

Thigh Muscles

The posterior surface of the thigh with superficial muscles removed.

The muscles of the back of the thigh.

Back Thigh Muscles

The muscles of the back of the thigh.

Superior muscles of the upper front of the trunk. Labels: 1, sterno-hyoid; 2, sterno-cleido-mastoid; 3, sterno-thyroid; 4, sterno-cleido-mastoid; 5, edge of the trapezius; 6, clavicle; 7, clavicular origin of the pectoralis major; 8, deltoid; 9, fold of the pectoralis major of the anterior edge of the axilla; 10, middle of the pectoralis major; 11, crossing and interlocking of the fibers of the external oblique of one side with those of the other; 12, biceps flexor cubiti; 13, teres major; 14, serratus major anticus; 15, superior heads of external oblique interlocking with serratus major.

Muscles of the Upper Trunk

Superior muscles of the upper front of the trunk. Labels: 1, sterno-hyoid; 2, sterno-cleido-mastoid;…