The correct response will be highlighted in green and will have a green checkmark when you click it.There is a stem of five responses after the questions that are displayed at the top.There is just one correct response for each of these multiple-choice questions.It has two heads, which arise from the medial epicondyle of the humerus and the shaft of the radius. In this article, we shall look at the anatomy of the muscles in the anterior compartment of the forearm - their attachments, actions, innervation and clinical correlations. They are mostly innervated by the median nerve (except for the flexor carpi ulnaris and medial half of flexor digitorum profundus, which are innervated by the ulnar nerve), and they receive arterial supply from the ulnar artery and radial artery This muscle group is associated with pronation of the forearm, flexion of the wrist and flexion of the fingers. Deep: flexor pollicis longus, flexor digitorum profundus and pronator quadratus.Intermediate: flexor digitorum superficialis.Superficial: flexor carpi ulnaris, palmaris longus, flexor carpi radialis, pronator teres.The muscles in the anterior compartment of the forearm are organised into three layers: Attachments: Originates from the anterior surface of the ulna and attaches to the anterior surface of the radius. ![]() Innervation: Median nerve (anterior interosseous branch).Ī square shaped muscle found deep to the tendons of the flexor digitorum profundus and flexor pollicis longus.Actions: Flexes the interphalangeal joint and metacarpophalangeal joint of the thumb.Attaches to the base of the distal phalanx of the thumb. ![]()
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