Anterior Forearm Muscles

Question 1

Pronator Teres Origin

Answer 1

Humeral Head: Medial Epicondyle of the humerus with the adjacent portion of the supracondylar ridge through the common flexor tendon (CFT

Ulnar Head: Medial margin of the coronoid process of the ulna

Question 2

Pronator Teres Insertion

Answer 2

Lateral surface of the radius, mid shaft

Question 3

Pronator Teres Innervation

Answer 3

Median nerve (C6/C7)

Question 4

Pronator Teres Action

Answer 4

Forearm pronation, Forarm flexion (weak)

Question 5

Flexor Carpi Radialis Origin

Answer 5

Medial epicondyle of the humerus through the common flexor tendon (CFT)

Question 6

Flexor Carpi Radialis Insertion

Answer 6

Base of 2nd and 3rd metacarpal bones (palmar side)

Question 7

Flexor Carpi Radialis Innervation

Answer 7

Medial Nerve (C6/C7)

Question 8

Flexor Carpi Radialis Action:

Answer 8

Wrist flexion, radial deviation (wrist abduction)

Question 9

Palmaris Longus Origin

Answer 9

Medial Epicondyle of humerus through common flexor tendon (CFT)

Question 10

Palmaris Longus Insertion

Answer 10

Palmar aponeurosis

Question 11

Palmaris Longus Innervation

Answer 11

Median Nerve (C7/C8)

Question 12

Palmaris Longus Action

Answer 12

Tenses Palmar fascia, assists wrist flexion

Question 13

Flexor Carpi Ulnaris Origin

Answer 13

Humeral Head medial epicondyle through the common flexor tendon (CFT)

Ulnar Head: Medial border of olecranon process and posterior border of the ulna (upper 2/3) by common aponeurosis

Question 14

Flexor Carpi Ulnaris Insertion

Answer 14

Pisisform bone, hook of hamate (by pisohamate ligament) and base of 5th metacarpal ligament (by pisometacarpal ligament)

Question 15

Flexor Carpi Ulnaris Innervation

Answer 15

Ulnar nerve (C7/C8/T1)

Question 16

Flexor Carpi Ulnaris Action

Answer 16

Wrist flexion, ulnar deviation (wrist adduction

Question 17

Flexor Digitorum Superficialis Origin

Answer 17

Humeral Head: Medial epicondyle of the humerson through the common flexor tendon (CFT)

Ulnar Head: Medial surface of the coronoid process of the ulna and the ulnar collateral ligament (soft attachment)

Radial Head: Anterior oblique line of the radius

Question 18

Flexor Digitorum Superficialis Insertion

Answer 18

sides of the shafts of middle phalanges of fingers 2-5 by split tendons

Question 19

Flexor Digitorum Superficialis Innervation

Answer 19

Median Nerve (C8-T1)

Question 20

Flexor Digitorum Superficialis Action

Answer 20

Finger Flexion at MP and proximal IP joints of fingers 2-5; wrist flexion

Question 21

Flexor Digitorum Profundus Origin

Answer 21

proximal 3/4 of the medial and anterior surface of the ulna and medial surface of the coronoid process, dorsal border of the ulna by common aponeurosis, medial half of the interosseous membrane

Question 22

Flexor Digitorum Profundus insertion

Answer 22

palmar surface, base of distal phalanges of fingers 2-5

Question 23

Flexor Digitorum Profundus innervation

Answer 23

Lateral half: anterior interosseous Nerve (AIN) branch of the median nerve

Medial half: Ulnar Nerve (C8/T1)

Question 24

Flexor Pollicis Longus Origin

Answer 24

anterior surface of the radius (middle third) distal to oblique line, and lateral half of the interosseous membrane

Question 25

Flexor Pollicis Longus Insertion

Answer 25

palmar surface, base, distal phalanx of thumb

Question 26

Flexor Pollicis Longus Innervation

Answer 26

AIN (C7/C8)

Question 27

Flexor Pollicis Longus Action

Answer 27

Thumb flexion at MCP, and IP joints; Weak wrist flexion

Question 28

Pronator Quadratus Origin

Answer 28

Linear ridge on distal anteriors surface of ulna

Question 29

Pronator Quadratus Insertion

Answer 29

distal 4th of the anterior surface of the radius

Question 30

Pronator Quadratus Innervation

Answer 30

Anterior interosseous nerve (AIN), (C7/C8)

Question 31

Pronator Quadratus Action

Answer 31

Forarm Pronation

Question 32

Flexor Digitorum Profundus Action

Answer 32

Finger flexion at MP, PIP and DIP joints of fingers 2-5; Wrist Flexion