Muscles Anterior Forearm Flashcards
(28 cards)
Pronator teres Origin
Common flexor tendon at medial epicondyle
Pronator teres Insertion
Shaft of radius
Pronator teres Innervation
Median nerve
Pronator teres Action
Forms medial boundary of cubital fossa
Pronates
ODD BALL: Also helps in weak flexion of the forearm, because it originates and inserts more proximal
Flexor carpi radialis Origin
Common flexor origin on medial epicondyle
Flexor carpi radialis Insertion
Proximal hand
Extends down toward radius, thumb side
Flexor carpi radialis Innervation
Median nerve
Flexor carpi radialis Action
Flexes at wrist
Main action at wrist
Because it’s crossing to radial side:
Abducts the wrist
Palmaris carpi ulnaris Origin
Common flexor bundle on epicondyle
Palmaris carpi ulnaris Insertion
Proximal hand on ulnar side
Palmaris carpi ulnaris Innervation
Ulnar nerve
THIS IS AN ODD BALL
Palmaris carpi ulnaris Action
1) Flexes hand at wrist
2) adduct wrist
Flexor digitorum superficialis Origin
Common flexor origin on medial epicondyle
Flexor digitorum superficialis Insertion
Proximal phalanges
Flexor digitorum superficialis Innervation
Median nerve
Flexor digitorum superficialis Action
1) Flexes the digits
2) Flexes the wrist
(Crosses the wrist and the MCP joint)
Flexor pollicis longus origin
Shaft of the radius
Flexor pollicis longus insertion
Distal phalange of digit one
(All the way to the end of the thumb)
Flexor pollicis longus innervation
Median nerve
Flexor pollicis longus action
1) Flexes the thumb
2) Some flexion of wrist
Flexor digitorum profundus Origin
Shaft of ulna
Flexor digitorum profundus Insertion
Tendons for digits 2-5 (All the way to the distal phalanx (finger tips)
Flexor digitorum profundus Innervation
Median and ulnar nerve
**Digits 4 and 5, medial aspect: Ulnar nerve
**Digits 2 and 3, lateral: Median nerve
(Big belly with several tendons, can receive from two different nerves)
Flexor digitorum profundus Action
1) flex wrist
2) flex fingers
