The anterior forearm

Question 1

forearm compartments separated by

Answer 1

• lateral intermuscular septum
• interosseus membrane

Question 2

types of bones in the hand

Answer 2

• 8 carpal bones
• 5 metacarpals
• phalanges

Question 3

Carpal bones

Answer 3

• Scaphoid
• Lunate
• Triquetrum
• Pisiform
• Trapezium
• Trapezoid
• Capitate
• Hamate

Question 4

Metacarpals

Answer 4

Inside palm, not opposable except in thumb

Question 5

Thumb phalanges

Answer 5

• proximal phalanx
• distal phalanx

Question 6

finger phalanges

Answer 6

• proximal phalanx
• middle phalanx
• distal phalanx

Question 7

Superficial muscles of the anterior forearm

Answer 7

• pronator teres
• flexor carpi radialis
• palmaris longus
• flexor carpi ulnaris

Question 8

intermediate muscles of anterior forearm

Answer 8

• flexor digitorum superficialis

Question 9

deep muscles of anterior forearm

Answer 9

• flexor pollicis longus
• flexor digitorum profundus
• pronator quadratus

Question 10

Pronator teres origin

Answer 10

• Medial epicondyle of the humerus
• Medial border of the coronoid process of the ulna

Question 11

Pronator Teres insertion

Answer 11

mid-lateral surface of the radial shaft

Question 12

Pronator Teres innervation

Answer 12

median nerve

Question 13

Pronator Teres action

Answer 13

pronates and flexes forearm

Question 14

Flexor carpi radialis origin

Answer 14

medial epicondyle through common flexor tendon

Question 15

flexor carpi radialis insertion

Answer 15

base of metacarpal 2 and 3

Question 16

flexor carpi radialis innervation

Answer 16

median nerve

Question 17

flexor carpi radialis action

Answer 17

flexes and abducts hand at wrist joint

Question 18

Palmaris longus origin

Answer 18

common flexor tendon on medial epicondyle of humerus

Question 19

palmaris longus insertion

Answer 19

flexor retinaculum and palmar aponeurosis

Question 20

palmaris longus innervation

Answer 20

median nerve

Question 21

palmaris longus action

Answer 21

accessory flexor of the wrist joint

Question 22

flexor carpi ulnaris origin

Answer 22

common flexor tendon and medial border of olecranon of ulna

Question 23

flexor carpi ulnaris insertion

Answer 23

pisiform, hook of hamate, bases of metacarpal 5

Question 24

flexor carpi ulnaris innervation

Answer 24

ulnar nerve

Question 25

flexor carpi ulnaris action

Answer 25

powerful flexion and adduction wrist

Question 26

flexor digitorum superficialis origin

Answer 26

common flexor tendon, coronoid process of ulna, anterior surface of radial shaft

Question 27

flexor digitorum superficialis insertion

Answer 27

middle phalanges of digits 2 to 5

Question 28

flexor digitorum superficialis innervation

Answer 28

median nerve

Question 29

flexor digitorum superficialis action

Answer 29

- flexes middle phalanges of digits 2 to 5 - flexes proximal phalanges and wrist

Question 30

flexor pollicis longus origin

Answer 30

medial epicondyle of humerus, anterior surface of radius

Question 31

flexor pollicis longus insertion

Answer 31

base of distal phalanx of thumb

Question 32

flexor pollicis longus innervation

Answer 32

median nerve

Question 33

flexor pollicis longus action

Answer 33

flexes thumb

Question 34

flexor digitorum profundus origin

Answer 34

upper anterior shaft of ulna, adjacent interosseus membrane

Question 35

flexor digitorum profundus insertion

Answer 35

base of distal phalanges 2 to 5 through tendons of flexor digitorum superficialis

Question 36

flexor digitorum profundus innervation

Answer 36

- lateral half by median nerve (index and middle fingers) - medial half by ulnar nerve (ring and little fingers)

Question 37

flexor digitorum profundus action

Answer 37

flexes distal phalanges of digits 2 to 5

Question 38

flexor tendons of digits rhyme

Answer 38

superficialis splits in 2 to allow profundus passing through

Question 39

pronator quadratus origin

Answer 39

distal 1/4 anterior surface of ulna

Question 40

pronator quadratus insertion

Answer 40

distal 1/4 anterior surface of radius

Question 41

pronator quadratus action

Answer 41

pronates forearm pulls the distal end of the radius anteriorly over the ulna during pronation

Question 42

pronator quadratus innervation

Answer 42

median nerve (anterior interosseous branch)