Forearm Flashcards
What are the two muscular compartments of the forearm?
1) anterior compartment (flexors)
2) posterior compartment (extensors)
What are the two muscular compartments of the forearm divided by?
interosseous membrane
What are the muscles of the anterior compartment of the forearm?
1) pronator teres
2) flexor carpi radialis
3) flexor digitorum superficialis
4) flexor digitorum profundus
5) flexor pollicis longus
O: pronator teres
medial epicondyle of humerus
I: pronator teres
shaft of radius
F: pronator teres
prime mover for pronation of the forearm
N: pronator teres
median nerve
O: flexor carpi radialis
medial epicondyle of humerus
I: flexor carpi radialis
second and third metacarpal bones
F: flexor carpi radialis
flexor of the wrist, abduction of the wrist
N: flexor carpi radialis
median nerve
O: flexor digitorum superficialis
medial epicondyle of humerus
I: flexor digitorum superficialis
tendons attach to middle phalanx of fingers 2 to 5
F: flexor digitorum superficialis
flexion of the metacarpal phalanges (MCP joints) and proximal interphalangeal joints (PIP joints)
N: flexor digitorum superficialis
median nerves
O: flexor digitorum profundus
ulna
I: flexor digitorum profundus
tendon attaches to distal phalanx of fingers 2 to 5
F: flexor digitorum profundus
prime mover for flexion of wrist and flexion of all joints in the fingers
N: flexor digitorum profundus
medial half: ulnar nerve
lateral half: median nerve
O: flexor pollicis longus
radius
I: flexor pollicis longus
tendon attaches to distal phalanx of the thumb
F: flexor pollicis longus
prime mover for flexion of the thumb
N: flexor pollicis longus
median nerve
What is the primary nerve of the anterior compartment muscles of the forearm?
median nerve (some ulnar nerve)