72 ANATOMY AND PHYSIOLOGY FOR NURSES 



elbow. Action, prevents the capsule from injury during 

 extension of the arm. Nerve, musculospiral. 



MUSCLES OF THE FOREARM 



Pronator teres. 

 Flexor carpi radialis. 



Superficial layer : 



Palmaris longus. 

 Flexor carpi ulnaris. 

 ^ Flexor sublimis digitorum. 



f Flexor profundus digitorum. 



Deep layer : -I Flexor longus pollicis. 



[ Pronator quadratus. 



f Supinator longus. 



Radial region : -| Extensor carpi radialis longior. 



[ Extensor carpi radialis brevior. 



(" Extensor communis digitorum. 



Posterior radio-ulnar region J Extensor minimi digiti. 

 (superficial layer] : Extensor carpi ulnaris. 



[ Anconeus. 



Deep layer : 



Supinator brevis. 

 Extensor ossis metacarpi pollicis. 

 Extensor brevis pollicis. 

 Extensor longus pollicis. 

 Extensor indicis. 



The pronator teres arises from the internal condyle of 

 the humerus and from the coronoid process of the ulna. 

 Inserted, outer side of shaft of radius. Action, pronates 

 forearm. Nerve, median. 



Flexor Carpi Radialis. Origin, internal condyle of 

 humerus. Insertion, metacarpal bone of index-finger. 

 Action, flexes wrist. Nerve, median. 



Palmaris Longus. Origin, from internal condyle. 

 Insertion, in the annular ligament and palmar fascia. 

 Action, makes the palmar fascia tense. Nerve, median. 



The flexor carpi ulnaris arises by two heads: First, 

 from the internal condyle; second, from the olecranon 



