Muscles of the Anterior Forearm - Superficial Layer

Question 1

Pronator Teres

Answer 1

origin: medial epicondyle and proximal ulna
insertion: shaft of the radius
innervation: median nerve (C5-T1)
action: pronation

Question 2

Flexor Carpi Radialis

Answer 2

origin: medial epicondyle and supracondylar ridge of the humerus
insertion: base of the 2nd and 3rd metacarpals
innervation: median nerve (C5-T1)
action: flexion and abduction at the wrist joint

Question 3

Palmaris Longus

Answer 3

origin: medial epicondyle and supracondylar ridge of the humerus
insertion: palmar aponeurosis
innervation: median nerve (C5-T1)
action: flexion at the wrist joint (weak)

Question 4

Flexor Digitorum Superficialis

Answer 4

origin: medial epicondyle and supracondylar ridge of the humerus
insertion: middle phalanges of digits 2-5
innervation: median nerve (C5-T1)
action: flexion of the digits 2-5 at MP and PIP joints

Question 5

Flexor Carpi Ulnaris

Answer 5

origin: medial epicondyle and supracondylar ridge of the humerus
insertion: base of the 5th metacarpal
innervation: ulnar nerve (C8-T1)
action: flexion and adduction at the wrist