Upper Extremity Anatomy

Front 1

What muscles are innervated by the Ulnar Nerve?

Back 1

-Flexor Carpi Ulnaris (At level of the elbow)
-Flexor Digitorum Profundus (medial half [digits IV and V])
Palmaris Brevis
Abductor Digiti Minimi
Opponens Digiti Minimi
Flexor Digiti Minimi
Dorsal Interossei (4-Abduct)
Palmar Interossei (3-Adduct)
Lumbricals III and IV (Medial Half)
Opponens Pollicis

Front 2

Flexor Carpi Ulnaris Origin/Insertion

Back 2

Flexor carpi ulnaris muscle arises by two heads - humeral and ulnar, connected by a tendinous arch beneath which the ulnar nerve and ulnar artery pass.

The humeral head arises from the medial epicondyle of the humerus by the common flexor tendon.
The ulnar head arises from the medial margin of the olecranon of the ulna and from the upper two-thirds of the dorsal border of the ulna by an aponeurosis.

Its insertion is into the pisiform bone and then via ligaments into the hamate bone and 5th metacarpal bone, acting to flex and adduct the wrist joint.

Front 3

What nerve innervates the flexor carpi ulnaris?

Back 3

Ulnar Nerve, C7, 8, T1

Front 4

What is the function of the flexor carpi ulnaris?

Back 4

Flexes and ulnarly deviates the wrist (wrist adduction), and may assist in elbow flexion

Front 5

Name the origin and insertion of the long head of the biceps

Back 5

The long head of the biceps tendon originates from the supraglenoid tubercle of the scapula at the convergence of the superior, middle, and inferior glenohumeral ligaments. The inferior glenohumeral ligament contributes to a portion of the anterior portion of the glenoid labrum, and the biceps tendon contributes to the posterior labrum.

Front 6

Name the insertion of the short and long head of the biceps

Back 6

The biceps brachii is comprised of two muscles (the short and long head) that converge into one tendon and insert onto the radial tuberosity of the radius.

Front 7

Name the five clinically important structures (muscles and ligaments) attached to the coracoid process

Back 7

See below