Upper Limb: Cards 6-1 to 6-66

Upper Limb

Cards 6-1 to 6-66

Bones and Joints

6-1 Humerus and Scapula: Anterior View

6-2 Humerus and Scapula: Posterior View

6-3 Shoulder (Glenohumeral) Joint: Anterior View

6-4 Shoulder (Glenohumeral) Joint: Lateral View

6-5 Bones of Elbow: In Extension

6-6 Bones of Elbow: In 90° Flexion

6-7 Ligaments of Elbow

6-8 Bones of Forearm

6-9 Bones of Wrist and Hand

6-10 Ligaments of Wrist: Palmar View

6-11 Ligaments of Wrist: Posterior View

6-12 Metacarpophalangeal and Interphalangeal Ligaments: Medial Views

6-13 Metacarpophalangeal and Interphalangeal Ligaments: Anterior View


6-14 Shoulder Muscles

Origin (proximal):

External occipital protuberance and medial third of the superior nuchal line of the occipital bone, ligamentum nuchae, and spinous processes of the 7th cervical vertebra and all 12 thoracic vertebrae.

Insertion (distal):

Superior fibers insert into the posterior border of the lateral third of the clavicle. Middle fibers insert into the medial margin of the acromion and posterior border of the scapular spine. Inferior fibers converge to end in an aponeurosis inserted into the scapular spine.


The upper and lower fibers act primarily to rotate the scapula for full abduction of the upper extremity. The upper fibers, acting alone, elevate the shoulder and brace the shoulder girdle when a weight is being carried by the shoulder or hand. Central fibers run horizontally and retract the shoulder. Lower fibers draw the scapula downward. When both muscles act together, the scapula can be adducted and the head drawn directly backward.


Motor supply is from the accessory nerve (CN XI). Proprioceptive fibers are from the 3rd and 4th cervical nerves.


The trapezius, in contrast to the other shoulder muscles, does not receive nerve fibers from the brachial plexus.


The trapezius can be tested by having a patient elevate the shoulder against resistance (the upper portion of the contracting muscle can be felt). This tests the integrity of the accessory nerve (CN XI) innervating this muscle.

Atlas Plate 409

See also Plates 29, 171, 185

6-15 Shoulder Muscles

6-16 Shoulder Muscles

6-17 Shoulder Muscles

6-18 Shoulder Muscles

6-19 Shoulder Muscles

6-20 Scapulohumeral Dissection

Jun 16, 2016 | Posted by in ANATOMY | Comments Off on Upper Limb: Cards 6-1 to 6-66

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