Muscles of the Upper Extremity: Flexor-Pronator Compartment of the Forearm

Question 1

Pronator Teres Proximal Attachment

Answer 1

Humeral head: Common flexor tendon at the medial epicondyle of the humerus
Ulnar head: Coronoid process of the ulna

Question 2

Pronator Teres Distal Attachment

Answer 2

Midway along the shaft of the radius

Question 3

Pronator Teres Innervation

Answer 3

Median n. {C6,*C7]

Question 4

Pronator Teres Action

Answer 4

Pronates the forearm
Assists with:
-Elbow flexion

Question 5

Flexor Carpi Radialis Proximal Attachment

Answer 5

Common flexor tendon at the medial epicondyle of the humerus

Question 6

Flexor Carpi Radialis Distal Attachment

Answer 6

Bases of metacarpals II and III

Question 7

Flexor Carpi Radialis Innervation

Answer 7

Median n. [C6,*C7]

Question 8

Flexor Carpi Radialis Action

Answer 8

Flexes the wrist
Abducts the wrist
Assists with:
-Elbow flexion

Question 9

Palmaris Longus Proximal Attachment

Answer 9

Common flexor tendon at the medial epicondyle of the humerus

Question 10

Palmaris Longus Distal Attachment

Answer 10

Palmar aponeurosis

Question 11

Palmaris Longus Innervation

Answer 11

Median n. [C7,C8]

Question 12

Palmaris Longus Action

Answer 12

Anchors the skin and fascia of the palm

Question 13

Flexor Digitorum Superficialis Proximal Attachment

Answer 13

Humeroulnar head: Common flexor tendon at the medial epicondyle of the humerus and coronoid process of the ulna
Radial head: Proximal half of the anterior surface of the radius

Question 14

Flexor Digitorum Superficialis Distal Attachment

Answer 14

Middle phalanx of digits II-V

Question 15

Flexor Digitorum Superficialis Innervation

Answer 15

Median n. [*C8,T1]

Question 16

Flexor Digitorum Superficialis Action

Answer 16

Flexes MCP & PIP joints of digits 2-5
Assists with:
-Wrist flexion

Question 17

Flexor Carpi Ulnaris Proximal Attachment

Answer 17

Humeral head: Common flexor tendon at the medial epicondyle of the humerus
Ulnar head: Olecranon process and posterior border of the ulna

Question 18

Flexor Carpi Ulnaris Distal Attachment

Answer 18

Pisiform, hamate, and 5th metacarpal

Question 19

Flexor Carpi Ulnaris Innervation

Answer 19

Ulnar n. [C7,*C8,T1]

Question 20

Flexor Carpi Ulnaris Action

Answer 20

Flexes the wrist
Adducts the wrist
Assists with:
-Elbow flexion

Question 21

Flexor Digitorum Profundus Proximal Attachment

Answer 21

Anterior surface of the ulna and adjacent interosseous membrane

Question 22

Flexor Digitorum Profundus Distal Attachment

Answer 22

Distal phalanx of digits II-V

Question 23

Flexor Digitorum Profundus Innervation

Answer 23

Median n. [*C8,T1] (to digits II-III)

Ulnar n. [C8,*T1] (to digits IV-V)

Question 24

Flexor Digitorum Profundus Action

Answer 24

Flexes MCP, PIP, & DIP joints of digits 2-5
Assists with:
-Wrist flexion

Question 25

Flexor Pollicis Longus Proximal Attachment

Answer 25

Middle of anterior surface of the radius and interosseus membrane

Question 26

Flexor Pollicis Longus Distal Attachment

Answer 26

Distal phalanx of the thumb

Question 27

Flexor Pollicis Longus Innervation

Answer 27

Median n. [*C8,T1]

Question 28

Flexor Pollicis Longus Action

Answer 28

Flexes CMC, MCP, & IP joints of the thumb
Assists with:
-Wrist flexion

Question 29

Pronator Quadratus Proximal Attachment

Answer 29

Anterior surface of the distal ulna

Question 30

Pronator Quadratus Distal Attachment

Answer 30

Anterior surface of the distal radius

Question 31

Pronator Quadratus Innervation

Answer 31

Median n. [*C8, T1]

Question 32

Pronator Quadratus Action

Answer 32

Pronates the forearm