Gross Anatomy I Lecture - Anterior superficial forearm muscles

what are the origins of the pronator teres?

1. medial epicondyle/humerus

2. coronoid process/ ulna

what is the insertion of the pronator teres?

pronator ridge/radius

what actions does the pronator teres carry out?

1. pronates forearm at superior radio-ulnar joint

2. assists in flexion at the elbow joint

what is the innervation of the pronator teres?

medial nerve

what is the origin of the flexor carpi radialis?

medial epicondyle/humerus

what is the insertion of the flexor carpi radialis?

second metacarpal (with small slip to third metacarpal)

what actions does the flexor carpi radialis carry out?

1. equal prime mover for flexion of the hand at the wrist joint

2. assists in abduction of hand

what is the innervation of the flexor carpi radialis?

median nerve

what is the origin of the palmaris longus?

medial epicondyle/humerus

what is the insertion of the palmaris longus?

palmar aponeurosis

what actions does the palmaris longus carry out?

1. helps flex hand

2. tightens palmar aponeurosis of palm/helps with palmar grip

what is the innervation of the palmaris longus?

median nerve

what are the origins of the flexor carpi ulnaris?

1. medial epicondyle/humerus

2. olecranon process/ulna

what are the insertions of the flexor carpi ulnaris?

1. pisiform

2. hamate

3. 5th metacarpal

what are the actions of the flexor carpi ulnaris?

1. equal prime mover for flexion of the hand at the wrist joint

2. adducts the hand

what is the innervation of the flexor carpi ulnaris?

ulnar nerve

what are the origins of the flexor digitorum superficialis?

1. medial epicondyle/humerus

2. shaft/radius

what are the insertions of the flexor digitorum superficialis?

middle phalanges (digits 2-5)

what actions does the flexor digitorum superficialis carry out?

1. flexes the PIP joints of digits 2-5

2. helps flex the hand

what is the innervation of the flexor digitorum superficialis?

median nerve