pronator-flexor Muscles of forearm

Question 0

muscles of anterior compartment of forearm

intermediate layer

Answer 0

flexor digitorum superficialis (FDS)

Question 1

muscles of anterior compartment of forearm

superficial layer

Answer 1

pronator teres (PT)
flexor carpi radialis (FCR)
palmaris longus
Flexor carpi ulnaris (FCU): humeral head, ulnar head

Question 2

muscles of anterior compartment of forearm

deep layer

Answer 2

flexor digitorum profundus (FDP)
flexor policis longus (FPL)
pronator quadratus

Question 3

info about flexor, pronator muscles

Answer 3

tendons of most flexor muscles pass across anterior surface of the wrist and are held in place by the palmar carpal ligament and the flexor retinaculum or transverse carpal ligament which are thickenings of the antebrachial fascia

Question 4

info about superficial layer of flexor-pronator muscles

Answer 4

attached proximally by common flexor tendon to the medial epicondyle of the humerus which is the common flexor origin

Question 5

pronator teres origin

Answer 5

ulnar head: coronoid process of ulna

humeral head: medial epicondyle of humerus

Question 6

pronator teres insertion

Answer 6

middle of convexity of lateral surface of radius

Question 7

pronator teres innervation

Answer 7

median nerve (C6, C7)

Question 8

pronator teres action

Answer 8

pronates and flexes forearm

Question 9

flexor carpi radialis origin

Answer 9

medial epicondyle of humerus

Question 10

flexor carpi radialis insertion

Answer 10

base of 2nd (3rd) metacarpal

Question 11

flexor carpi radialis innervation

Answer 11

Median nerve (c6, C7)

Question 12

flexor carpi radialis action

Answer 12

flexes and abducts hand at wrist

Question 13

palmaris longus origin

Answer 13

medial epicondyle of humerus

Question 14

palmaris longus insertion

Answer 14

distal half of flexor retinaculum, palmar aponeurosis

Question 15

palmaris longus innervation

Answer 15

median nerve (c7, c8)

Question 16

palmaris longus action

Answer 16

flexes hand (at wrist) and tenses palmar aponeurosis

Question 17

flexor carpi ulnaris: humeral head, ulnar head

origin

Answer 17

olecranon and posterior border of ulna (via aponeurosis)

Question 18

flexor carpi ulnaris insertion

Answer 18

pisiform, hook of hamate, 5th metacarpal

Question 19

flexor carpi ulnaris action

Answer 19

flexes and adducts hand at wrist

Question 20

flexor digitorum superficialis origin

Answer 20

humero-ulnar head: medial epicondyle of humerus and coronoid process of ulna
radial head: oblique line of radius

Question 21

flexor digitorum superficialis insertion

Answer 21

shafts (bodies) of middle phalanges of medial four digits

Question 22

flexor digitorum superficialis innervation

Answer 22

median nerve (c7, c8, t1)

Question 23

flexor digitorum superficialis action

Answer 23

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

Question 24

flexor digitorum profundus origin

Answer 24

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

Question 25

flexor digitorum profundus insertion

Answer 25

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

Question 26

flexor digitorum profundus innervation

Answer 26

``` lateral part (to digits 2 and 3): Median nerve (c8, t1) (anterior interosseus branch) medial part (to digits 4 and 5): ulnar nerve (c8, T1) ```

Question 27

flexor digitorum profundus action

Answer 27

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

Question 28

flexor policis longus origin

Answer 28

anterior surface of radius and adjacent interosseus membrane

Question 29

flexor policis longus insertion

Answer 29

base of distal phalanx of thumb

Question 30

flexor policis longus innervation

Answer 30

anterior interosseus nerve, from medial nerve (C8, T1)

Question 31

flexor policis longus action

Answer 31

flexes wrist | flexes metacarpophalangeal and interphalangeal joints of thumb

Question 32

pronator quadratus origin

Answer 32

distal quarter of anterior surface of ulna

Question 33

pronator quadratus insertion

Answer 33

distal quarter of anterior surface of radius

Question 34

pronator quadratus innervation

Answer 34

anterior interosseus nerve, from median nerve (c8, T1)

Question 35

pronator quadratus action

Answer 35

pronates forearm | deep fibers bind radius and ulna together