Muscles of the Forearm, Wrist, and Hand
Flexor Carpi Radialis, Flexor Carpi Ulnaris, Palmaris Longus, and Flexor Digitorum Superficialis.
Muscles that flex the wrist and all originate on the medial epicondyle of the humerus.
Finger flexion
Of all movements of the forearm, wrist, and hand, which is the most powerful.
Pronator Quadratus
Origin: anterior distal quarter of the ulnar shaft. Insertion: anterior distal quarter of the radial shaft. Action: Pronates the arm.
Supinator
Origins: lateral epicondyle of the humerus, proximal 8th of the ulnar shaft. Insertion: proximal lateral radial shaft. Action: supinates the forearm.
Pronator Teres
Origins: medial epicondyle of the humerus, coranoid process of the ulna. Insertion: mid lateral radial shaft. Actions: pronates the arm, flexes the elbow.
Extensors
What muscle group lies on the hairy side of the forearm?
Extensor Digiti Minimi
also known as the tea drinker's muscle, becaue it extends the little finger while you raise the teacup to your lips.
Extensor Digitorum
most superficial muscle of the posterior forearm
Opponens Pollicis
muscle that allows movement of the tip of the thumb to the tip of the pinky.
Extensor Carpi Radialis Brevis
If this muscle becomes inflamed, it is called "tennis elbow".
Flexors
Most powerful movement is flexion and the muscle lies on the "hairless" side of the arm.
Palmaris Longus
This muscle is absent in approximately 10-11% of cadavers.
Retinaculum of the wrist
what causes carpal tunnel