Test 2 Anterior Forearm Muscles

Question 0

Pronator teres (PT) proximal attachment, origin

Answer 0

ulnar head:coronoid process of ulna

humeral head: medial epicondyle of the humerus

Question 1

superficial (first) layer

anterior compartment of forearm

Answer 1

• Pronator teres (PT)
• flexor carpi radialis (FCR)
• palmaris longus
• flexor carpi ulnaris (FCU)

Question 2

Pronator teres (PT) distal attachment, insertion

Answer 2

Middle of convexity of lateral surface of radius

Question 3

pronator teres (PT) innervation

Answer 3

median nerve

C6 C7

Question 4

pronator Teres (PT) action

Answer 4

pronates and flexes forearm(at elbow)

Question 5

flexor carpi radialis (FCR) proximal attachment, origin

Answer 5

medial epicondyle of humerus

Question 6

flexor carpi radialis (FCR) distal attachment insertion

Answer 6

base of 2nd (&3rd) metacarpal

Question 7

flexor carpi radialis (FCR) innervation

Answer 7

median nerve

C6 C7

Question 8

flexor carpi radialis (FCR) action

Answer 8

flexes and abducts hand (at wrist)

Question 9

palmaris longus proximal attachment, origin

Answer 9

medial epicondyle of humerus

Question 10

palmaris longus distal attachment insertion

Answer 10

• distal 1/2 of flexor retinaculum

- palmar aponeurosis

Question 11

palmaris longus innervation

Answer 11

median nerve

C7 C8

Question 12

palmaris longus action

Answer 12

flexes hand (at wrist) and tenses palmar aponeurosis

Question 13

flexor carpi ulnaris (FCU) proximal attachment origin

Answer 13

olecranon and posterior border (via aponeurosis)

Question 14

flexor carpi ulnaris (FCU) distal attachment insertion

Answer 14

• pisiform
• hook of the hammate
• 5th metacarpel

Question 15

flexor carpi ulnaris (FCU) innervation

Answer 15

ulnar nerve C7 C8

Question 16

flexor carpi ulnaris (FCU):(humeral head, ulnar head) action

Answer 16

flexes and adducts hand (at wrist)

Question 17

intermediate (second) layer

anterior compartment of forearm

Answer 17

-flexor digitorum superficialis (FDS)

Question 18

flexor digitorum superficialis (FDS) proximal attachment, origin

Answer 18

humero-ulnar head: medial epicondyle of humerus and corocoid process of ulna

radial head: oblique line of radius

Question 19

flexor digitorum superficialis (FDS) distal attachment insertion

Answer 19

shafts (bodies) of middle phalanges of medial four digits

Question 20

flexor digitorum superficialis (FDS) innervation

Answer 20

medial nerve

C7 C8 T1

Question 21

flexor digitorum superficialis (FDS) action

Answer 21

• flexes proximal interphalangeal jooints of middle four digits; acting more strongly
• also flexes proximal phalanges at metacarpophalangeal joints

Question 22

deep (third) layer anterior compartment of forearm

Answer 22

• flexor digitoum profundus (FDP)
• flexor pollicis longus (FPL)
• pronator quadratus

Question 23

flexor digitoum profundus (FDP) proximal attachment, origin

Answer 23

proximal three quarters of medial and anterior surfaces of ulna and interosseou membrane

Question 24

flexor digitoum profundus (FDP) distal attachment, insertion

Answer 24

base of distal phalanes of 2nd 3rd 4th and 5th digits

Question 25

flexor digitoum profundus (FDP) innervation

Answer 25

lateral part (to digits 2 and 3): median nerve C8 T1(anterior onterosseous branch) medial part(to digits 4 and 5):ulnar nerve C8 T1

Question 26

flexor digitoum profundus (FDP) action

Answer 26

flexes interphalangeal joints of digits 2,3,4,5 assists with wrist flexion

Question 27

flexor pollicis longus (FPL) proximal attachment origin

Answer 27

anterior surface of radius and adjacent interosseous membrane

Question 28

flexor pollicis longus (FPL) distal attachment insertion

Answer 28

base of distal phalanx of thumb

Question 29

flexor pollicis longus (FPL) innervation

Answer 29

anterior interosseous nerve from median nerve C8 T1

Question 30

flexor pollicis longus (FPL) action

Answer 30

flaexes phalanges of first digit | thumb

Question 31

Pronator quadratus proximal attachment origin

Answer 31

distal quarter of anterior surface of ulna

Question 32

Pronator quadratus distal attachment insertion

Answer 32

distal quarter of anterior surface of radius

Question 33

Pronator quadratus innervation

Answer 33

anterior interosseous nerve from median nerve C8 T1

Question 34

Pronator quadratus action

Answer 34

- pronates forearm | - deep fibers bind radius and ulna together