98 



OF TIIR MUSCLES. 



the humerus, upon the inner side. Action. It is described 

 with the foregoing rnuscle. 



Antea spinatus (Plate 11. d. Fig 1.1). Origin. From 

 the anterior fossa of the scapula ; a small portion of the 

 cartilage of the scapula ; and the neck of the coracoid pro- 

 cess of the bone. To be inserted into the head of the 

 liumerus ; the capsular ligament ; and the bursal mem- 

 brane of the flexor brachii. Action. To draw the scapula 

 forward upon the humerus ; and also to extend the humerus, 

 when it is flexed upon the scapula. 



PosTEA SPINATUS (P/«^e II. c) . Originates: from the car- 

 tilages and the posterior fossa of the scapula ; and is inserted 

 into the capsular ligament ; and outer tubercle of the 

 humerus, by tendon — undeiiieath which there is a bursa ; 

 — it gains the ridge extending from the trochanter of the 

 humerus. Action. To oppose the foregoing muscle. 



FIG 1. 



INSIDE OF THE SCAPULA. 



1, 1, The antea spinatus. 



2, Subscapularis. 



3, Teres iuternus. 



4, Caput magnum of ti'iceps ex- 



tensor pedis. 



5, Seapulo-ulnarius. 



G, A distinct muscle, without a 



name. 

 7, A portion of the caput medium. 

 8, 8, Humeralis. 

 9, Caput parvum. 



10, Coraco humeralis. 



1 1 , Flexor bi'achii. 



SuB-scAPULARis (Fig 1.2). Origin. From the venter 

 of the scapula to the neck of the bone ; and to the cora- 



