Muscles of the Posterior Compartment of the Antebrachium/Forearm

Question 1

Proximal 2/3 of supraepicondylar ridge of humerus

Answer 1

Brachioradialis Origin

Question 2

Distal radius, proximal to styloid process

Answer 2

Brachioradialis Insertion

Question 3

Flexes forearm when it is pronated

Answer 3

Brachioradialis Action

Question 4

Lateral Supracondylar Ridge of Humerus

Answer 4

Extensor Carpi Radialis Longus Origin

Question 5

Dorsal aspect of base of 2nd metacarpal

Answer 5

Extensor Carpi Radialis Longus Insertion

Question 6

Extends and abducts hand at wrist 1

Answer 6

Extensor Carpi Radialis Longus Action

Question 7

Lateral Epicondyle of Humerus 1

Answer 7

Extensor Carpi Radialis Brevis Origin

Question 8

Dorsal aspect of base of 3rd metacarpal

Answer 8

Extensor Carpi Radialis Brevis Insertion

Question 9

Extends and abducts hand at wrist 2

Answer 9

Extensor Carpi Radialis Brevis Action

Question 10

Deep branch of radial nerve (C7, 8)

Answer 10

Extensor Carpi Radialis Brevis Innervation

Question 11

Lateral Epicondyle of Humerus 2

Answer 11

Extensor Digitorum Origin

Question 12

Extensor expansions of medial four fingers

Answer 12

Extensor Digitorum Insertion

Question 13

Extends medial 4 fingers at MP joints and somewhat at IP joints

Answer 13

Extensor Digitorum Actions

Question 14

Lateral Epicondyle of Humerus 3

Answer 14

Extensor Digiti Minimi Origin

Question 15

Extensor expansion of fifth finger

Answer 15

Extensor Digiti Minimi Insertion

Question 16

Extends 5th finger at MP joint and somewhat at the IP joint

Answer 16

Extensor Digiti Minimi Action

Question 17

Lateral Epicondyle of Humerus Posterior Border of Ulna

Answer 17

Extensor Carpi Ulnaris Origin

Question 18

Dorsal aspect of base of 5th metacarpal

Answer 18

Extensor Carpi Ulnaris Insertion

Question 19

Extends and adducts hand at wrist

Answer 19

Extensor Carpi Ulnaris Action

Question 20

Posterior Interosseous Nerve (C7, 8) 3

Answer 20

Extensor Digitorum Innervation

Extensor Digiti Minimi Innervation

Extensor Carpi Ulnaris Innervation

Question 21

Distal third of ulna

Answer 21

Pronator Quadratus Origin

Question 22

Distal third of radius

Answer 22

Pronator Quadratus Insertion

Question 23

Pronates Forearm Helps interosseous membrane hold radius and ulna together

Answer 23

Pronator Quadratus Actions

Question 24

Ulnar Head- Coronoid process of ulna Humeral Head- Medial Epicondyle and supracondylar ridge

Answer 24

Pronator Teres Origin

Question 25

Middle third of lateral surface of radius

Answer 25

Pronator Teres Insertion

Question 26

Pronates Forearm, Flexes Antebrachium

Answer 26

Pronator Teres Actions

Question 27

Median Nerve (2)

Answer 27

Pronator Teres Innervation Pronator Quadratus Innervation

Question 28

Lateral epicondyle of humerus Radial collateral and annular ligaments Ulnar Crest

Answer 28

Supinator Origin

Question 29

Proximal third of radius

Answer 29

Supinator Insertion

Question 30

Supinates Forearm

Answer 30

Supinator Actions