Anterior Flexor Compartment

Question 0

What is the origin, insertion, Innervation, and action of the flexor carpi radialis?

Answer 0

Medial epicondyle of the humerus to the base of the 2nd (3rd) metacarpal
Innervated: median nerve C7-C8
Action: flexion and abducts the hand at the wrist

Question 1

What is the origin, insertion, Innervation, and action of the pronation teres?

Answer 1

Ulnar head is the corona is process of the ulna and humeral head is the medial epicondyle of the humerus inserts on the middle convexity of the lateral surface of the radius.
Innervated by the median nerve C6-C7
Actions: pronates and flexes the forearm

Question 2

What is the origin, insertion, Innervation, and action of the palmaris longus?

Answer 2

Medial epicondyle of the humerus to the distal half the flexor retinaculum and palmar aponeurosis.
Innervated by median nerve C7-C8
Actions: flexes hand and tenses palmar aponeurosis

Question 3

What is the origin, insertion, Innervation, and action of the flexor carpii ulnaris?

Answer 3

Olecranon and posterior border of the ulna via an aponeurosis to the pisiform, hook of hamate, and 5th metacarpal.
Innervated by the ulnar nerve C7-C8
Action: flexes and adducts the hand at the wrist

Question 4

What is the origin, insertion, Innervation, and action of the flexor digitorum superficialis?

Answer 4

Humero-ulnar head: medial epicondyle of the humerus and coronoid process of the ulna
Radial head: oblique line of the radius
To the shafts of the middle phalanges of the medial four digits.
Innervation: C7-T1
Actions: flexes the wrist joint, it flexes the metacarpophalangeal joints and flexes the proximal interphlangeal joints.

Question 5

What is the origin, insertion, Innervation, and action of the flexor digitorum profundus?

Answer 5

Proximal three quarters of the medial and anterior surfaces of the ulna and interosseous membrane to the bases of the distal phalanx medial 4 digits.
Innervation: lateral part is the median nerve (digits 2 and 3) medial part is the ulnar nerve (digits 4 and 5) C8-T1
Actions: flexes the wrist, and distal interphlangeal joint

Question 6

What is the origin, insertion, Innervation, and action of the flexor pollicis longus?

Answer 6

Anterior surface of the radius and adjacent interosseous membrane to the base of the distal phalanx of the thumb.
Innervation: anterior interosseous nerve from the median nerve C8-T1
Actions: flexes the wrist, flexes the metacarpophalangeal joints and inter phalange all joints of the thumb.

Question 7

What is the origin, insertion, Innervation, and action of the pronatior quadratus?

Answer 7

Distal quarter of the anterior surface of the ulna to the distal quarter of the anterior surface of the radius
Innervated: C8-T1 anterior interosseous membrane of the median nerve.
Actions: pronation and hold radius and ulna together