Anterior Compartment of Forearm Muscles

Question 1

what are the 4 superficial muscles of the anterior compartment of the forearm

Answer 1

1. pronator teres
2. flexor carpi radialis
3. flexor carpi ulnaris
4. palmaris longus

Question 2

what is the intermediate muscle of the anterior compartment of the forearm

Answer 2

Flexor Digitorum Superficials

Question 3

what are the 3 deep layers of the anterior compartment of the forearm

Answer 3

1. flexor digitorum profundus
2. flexor pollicis longus
3. pronator quadratus

Question 4

what are the attachments of the pronator teres

Answer 4

proximal: medial epicodlye of humerus
distal: midlateral shaft of radius

Question 5

what is the torque of the pronator teres

Answer 5

pronator and flexor of the forearm

Question 6

what is the innervation and blood supply of the pronator teres

Answer 6

median nerve (C6 & C7)
ulnar and anterior recurrent ulnar artery

Question 7

what are the attachments of the flexor carpi radialis

Answer 7

proximal: medial epicondyle of humerus
distal: base of 2nd metacarpal

Question 8

what is the torque of the flexor carpi radialis

Answer 8

flexor and abductor of the hand

Question 9

what is the innervation and blood supply of the flexor carpi radialis

Answer 9

median nerve (C6 & C7)
ulnar artery

Question 10

what are the attachments of the flexor carpi ulnaris

Answer 10

proximal: medial epicondyle of humerus
distal: pisiform, hamate, and metacarpal 5

Question 11

what is the torque of the flexor carpi ulnaris

Answer 11

flexor of wrist & adductor of hand

Question 12

what is the innervation and blood supply of the flexor carpi ulnaris

Answer 12

ulnar nerve
ulnar artery

Question 13

what are the attachments of the palmaris longus

Answer 13

proximal: medial epicondyle of humerus
distal: palmer aponeurosis & bases of proximal phalanx in digits 2-5

Question 14

what is the torque of the palmaris longus

Answer 14

flexor of hand & tightens palmar aponeurosis

Question 15

what is the innervation and blood supply of the palmaris longus

Answer 15

median nerve (C7 & C8)
unlar artery

Question 16

what are the attachments of flexor digitorum superficialis

Answer 16

proximal: medial epicondyle humerus, coronoid process, upper anterior radius

distal: middle phalanges 2-5

Question 17

what is the torque of the flexor digitorum superficialis

Answer 17

flexor middle & proximal phalanges

Question 18

what are the innervations and blood supply to the flexor digitorum superficials

Answer 18

median nerve (C7, C8, T1)
ulnar artery

Question 19

what are the attachments of the flexor digitorum profundus

Answer 19

proximal (2 heads):
- medial head: anterior surface of ulna
- lateral head: interosseous membrane

distal: base of distal phalanges, digits 2-5

Question 20

what is the torque of the flexor digitorum profundus

Answer 20

flexor at DIP, PIP, and MP joints

Question 21

what are the innervations of the flexor digitorum profundus

Answer 21

2 nerves:
- Ulnar Nerve (C8 & T1): medial head digits 4 & 5
- Median Nerve (C8 &T1): lateral head digits 2 & 3

Question 22

what are the attachments of the flexor pollicis longus

Answer 22

proximal: anterior surface of radius & interosseous membrane
distal: base of distal phalanx of thumb

Question 23

what is the torque of the flexor pollicis longus

Answer 23

flex thumb

Question 24

what is the innervation and blood supply of the flexor pollicis longus

Answer 24

anterior interosseous branch of median nerve (C8-T1)
anterior interosseous artery

Question 25

what are the attachments of the pronator quadratus

Answer 25

proximal: distal anterior ulna
distal: distal anterior radius

Question 26

what is the torque of the pronator quadratus

Answer 26

pronator forearm

Question 27

what Is the innervation and blood supply to the pronator quadratus

Answer 27

anterior interosseous branch of median nerve
anterior interosseous artery