Exam 2 Volar Forearm and Wrist

Question 0

What is the insertion of pronator teres? ((Superficial))

Answer 0

middle of convexity of lateral surface of radius

Question 1

What is the origin of pronator teres? ((Superficial))

Answer 1

Ulnar head: coronoid process of ulna

Humeral Head: medial epicondyle of humerus

Question 2

What is the innervation of pronator teres? ((Superficial))

Answer 2

Median Nerve C6, C7

Question 3

What is the action of pronator teres? ((Superficial))

Answer 3

Pronates and flexes forearm

Question 4

What is the origin of flexor carpi radialis? ((Superficial))

Answer 4

Medial epicondyle of humerus

Question 5

What is the insertion of flexor carpi radialis? ((Superficial))

Answer 5

Base of 2nd (3rd) metacarpal

Question 6

What is the innervation for flexor carpi radialis? ((Superficial))

Answer 6

Median Nerve C6, C7

Question 7

What is the action for flexor carpi radialis? ((Superficial))

Answer 7

Flexes and radially deviates hand at wrist

Question 8

What is the origin of the palmaris longus? ((Superficial))

Answer 8

Medial epicondyle of humerus

Question 9

What is the insertion of palmaris longus? ((Superficial))

Answer 9

Distal half of flexor retinaculum, palmar aponeurosis

Question 10

What is the innervation of the palmaris longus? ((Superficial))

Answer 10

Median Nerve C7, C8

Question 11

What is the action of palmaris longus? ((Superficial))

Answer 11

Flexes hand (at wrist) and tenses palmar aponeurosis

Question 12

What is the origin of flexor carpi ulnaris? ((Superficial))

Answer 12

humeral and ulnar heads

olecranon and posterior border of ulna (via aponeurosis)

Question 13

What is the insertion of flexor carpi ulnaris? ((Superficial))

Answer 13

pisiform, hook of hamate, 5th metacarpal

Question 14

What is the action of flexor carpi ulnaris? ((Superficial))

Answer 14

Flexes and ulnar deviates hand at wrist

Question 15

What is the origin of flexor digitorum superficialis? ((Intermediate))

Answer 15

Humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna

Radial head: oblique line of radius

Question 16

What is the insertion of flexor digitorum superficialis? ((Intermediate))

Answer 16

Shafts of middle phalanges of medial four digits

Question 17

What is the innervation of flexor digitorum superficialis? ((Intermediate))

Answer 17

Median Nerve C7, C8, T1

Question 18

What is the action of flexor digitorum superficialis? ((Intermediate))

Answer 18

Flexes wrist joint; flexes proximal interphalangeal joints of middle four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints

Question 19

What is the origin of flexor digitorum profundus? ((Deep))

Answer 19

Proximal three quarters of medial and anterior surfaces of ulna and interosseous membrane

Question 20

What is the insertion of flexor digitorum profundus? ((Deep))

Answer 20

Bases of distal phalanges of 2nd, 3rd, 4th and 5th digits

Question 21

What is the innervation of flexor digitorum profundus? ((Deep))

Answer 21

Digits 2 and 3: Median nerve C8, T1 (anterior interosseous branch)

Digits 4 and 5: Ulnar nerve C8, T1

Question 22

What is the action of flexor digitorum profundus? ((Deep))

Answer 22

Flexes wrist joint; flexes distal interphalangeal joints of digits 2, 3, 4, 5; assists with wrist flexion

Question 23

What is the origin of flexor pollicis longus? ((Deep))

Answer 23

Anterior surface of radius and adjacent interosseous membrane

Question 24

What is the insertion of flexor pollicus longus? ((Deep))

Answer 24

Base of distal phalanx of thumb

Question 25

What is the innervation of flexor pollicis longus? ((Deep))

Answer 25

Anterior interosseous nerve, from median nerve C8, T1

Question 26

What is the action of the flexor pollicis longus? ((Deep))

Answer 26

Flexes wrist; flexes metacarpophalangeal and interphalangeal joints of thumb

Question 27

What is the origin of pronator quadratus? ((Deep))

Answer 27

distal quarter of anterior surface of ulna

Question 28

What is the insertion of pronator quadratus? ((Deep))

Answer 28

distal quarter of anterior surface of radius

Question 29

What is the innervation of pronator quadratus? ((Deep))

Answer 29

Anterior interosseous nerve, from median nerve C8, T1

Question 30

What is the action of pronator quadratus? ((Deep))

Answer 30

pronates forearm; deep fibers bind radius and ulna together