Exam 2 Volar Forearm and Wrist Flashcards
What is the insertion of pronator teres? ((Superficial))
middle of convexity of lateral surface of radius
What is the origin of pronator teres? ((Superficial))
Ulnar head: coronoid process of ulna
Humeral Head: medial epicondyle of humerus
What is the innervation of pronator teres? ((Superficial))
Median Nerve C6, C7
What is the action of pronator teres? ((Superficial))
Pronates and flexes forearm
What is the origin of flexor carpi radialis? ((Superficial))
Medial epicondyle of humerus
What is the insertion of flexor carpi radialis? ((Superficial))
Base of 2nd (3rd) metacarpal
What is the innervation for flexor carpi radialis? ((Superficial))
Median Nerve C6, C7
What is the action for flexor carpi radialis? ((Superficial))
Flexes and radially deviates hand at wrist
What is the origin of the palmaris longus? ((Superficial))
Medial epicondyle of humerus
What is the insertion of palmaris longus? ((Superficial))
Distal half of flexor retinaculum, palmar aponeurosis
What is the innervation of the palmaris longus? ((Superficial))
Median Nerve C7, C8
What is the action of palmaris longus? ((Superficial))
Flexes hand (at wrist) and tenses palmar aponeurosis
What is the origin of flexor carpi ulnaris? ((Superficial))
humeral and ulnar heads
olecranon and posterior border of ulna (via aponeurosis)
What is the insertion of flexor carpi ulnaris? ((Superficial))
pisiform, hook of hamate, 5th metacarpal
What is the action of flexor carpi ulnaris? ((Superficial))
Flexes and ulnar deviates hand at wrist
What is the origin of flexor digitorum superficialis? ((Intermediate))
Humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna
Radial head: oblique line of radius
What is the insertion of flexor digitorum superficialis? ((Intermediate))
Shafts of middle phalanges of medial four digits
What is the innervation of flexor digitorum superficialis? ((Intermediate))
Median Nerve C7, C8, T1
What is the action of flexor digitorum superficialis? ((Intermediate))
Flexes wrist joint; flexes proximal interphalangeal joints of middle four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints
What is the origin of flexor digitorum profundus? ((Deep))
Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane
What is the insertion of flexor digitorum profundus? ((Deep))
Bases of distal phalanges of 2nd, 3rd, 4th and 5th digits
What is the innervation of flexor digitorum profundus? ((Deep))
Digits 2 and 3: Median nerve C8, T1 (anterior interosseous branch)
Digits 4 and 5: Ulnar nerve C8, T1
What is the action of flexor digitorum profundus? ((Deep))
Flexes wrist joint; flexes distal interphalangeal joints of digits 2, 3, 4, 5; assists with wrist flexion
What is the origin of flexor pollicis longus? ((Deep))
Anterior surface of radius and adjacent interosseous membrane
What is the insertion of flexor pollicus longus? ((Deep))
Base of distal phalanx of thumb
What is the innervation of flexor pollicis longus? ((Deep))
Anterior interosseous nerve, from median nerve C8, T1
What is the action of the flexor pollicis longus? ((Deep))
Flexes wrist; flexes metacarpophalangeal and interphalangeal joints of thumb
What is the origin of pronator quadratus? ((Deep))
distal quarter of anterior surface of ulna
What is the insertion of pronator quadratus? ((Deep))
distal quarter of anterior surface of radius
What is the innervation of pronator quadratus? ((Deep))
Anterior interosseous nerve, from median nerve C8, T1
What is the action of pronator quadratus? ((Deep))
pronates forearm; deep fibers bind radius and ulna together
