Forearm Flexor Muscles: Anatomy, Innervation, and Actions UPDATED ACTUAL Questions and CORRECT Answers

Forearm Flexor Muscles: Anatomy, Innervation,
and Actions UPDATED ACTUAL Questions
and CORRECT Answers




flexor carpi ulnaris *anterior superficial compartment-forearm pfpF
prox: medial epicondyle of humerus; olecranon &
posterior border of ulna
distal: pisiform, hook of hamate, base of 5th
metacarpal
Inn: Ulnar n
Blood: posterior ulnar recurrent a
Action: flexes/adducts hand at wrist

,flexor digitorum profundus *anterior deep compartment-forearm/palmar
hand
Prox: medial/anterior/proximal ulna & interosseous
membrane
distal: palmar base of distal phalanges of medial 4
digits
Inn: ulnar n (medial part) medial n (lateral part)
Blood: anterior interossesous a & muscular
branches of ulnar a
Action: flexes distal phalanges of medial 4
digits/assist in flexion of hand at wrist




flexor digitorum superficialis *anterior intermediate compartment-
forearm/palmar hand
Prox: medial epicondyle of humerus & coronoid
process of ulna & superior anterior radius
Distal: middle phalanges of medial 4 digits
Inn: median n
Blood: ulnar & radial a
Action: flexes middle & proximal of medial 4
digits/flexes hand at the wrist

, flexor carpi radialis *anterior superficial compartment-forearm pFpf
Prox: medial epicondyle of humerus
Distal: base of 2nd metacarpal
Inn: median n
Blood: radial a
Action: flexes & abducts hand at wrist




palmaris longus *anterior superficial compartment-forearm pfPf
Prox: medial epicondyle of humerus
Distal: distal flexor retinaculum & palmar
aponeurosis
Inn: median n
Blood: posterior ulnar recurrent a
Action: flexes hand at wrist & tenses palmar
aponeurosis