258 ANATOMICAL TECSNOLOGT. 



insertion of the cephalic division of the ental lamina of the ento- 

 pectoralis extends just dorsad from this depression, and the Tuber- 

 culum micostale is just distad of it. 



M. MICOSTALIS. 



§ 679. Synonymy. — The human teres minor, Q., A, 406, Q., A, I, 201 ; " mieostal," 

 S.-D., A, 11, 345 ; " court abducteur du iras, ou petit rond," Ch., A, 265 ; s?iort abductorof 

 the arm, or teres minor, Ch. (Fl.), A, 250 ; teres minor, Miv., B, 148. 



Figures. — Ectal aspect (74, where the muscle has its more common name teres minor) ; 

 origin area (43) ; insertion area (68). 



Posture.— As for the M. infraspinatus (§ 678). 



Exposure. — By the reflection of the M. infraspinatus. 



General Description. — Small, from part of the glenoid border 

 of the scapula to the Tuberculum micostale (Fig. 68). 



Dissection. — The mesoscapnlar border was exposed by the re- 

 moval of the infraspinatus. The opposite border is nearly in line 

 with the glenoid border of the scapula, and it is only necessary to 

 remove some connective tissue between it and the oblique border of 

 the ectotriceps, and to dissect up the muscle from the meditriceps, 

 to which it adheres somewhat closely. In reflecting, note the close 

 attachment of the ental surface to the capsule of the shoulder joint. 



Origin. — By a sheet of tendinous fibers from the glenoid border 

 of the scapula, beginning about one fifth of the length of the border 

 from the glenoid fossa, and ending at its middle. 



Insertion. — By a very short tendon upon the Tbcl. micostale on 

 the cephalic aspect of the trochiter. 



M. TERES. 



g 680. Synonymy.— The human teres major, G., A, 408, Q., A, I, 202 ; " teres," S.-D., 

 A, II, 389 ; " abducteur du bras, ou grand rond," Oh., A, 267 ; abductor of the arm, or teres 

 major, Ch. (Fl.), A, 253 ; teres major, Miv., B, 148. 



Figures. — Ectal aspect (66, 67, 74); ental aspect (75) ; origin area (43); insertion area 

 (69, 70). 



Posture. — The same as for the M. sub scapular is. 



Exposure.— If the bicipital arch has not been divided, it must 

 be now ; the brachial artery and nerves accompanying it must be 

 removed, and the body of the M. biceps pushed ventrad. 



General Description. — A thick band ; from the glenoid border 

 of the sca/pula to the ventral surface of the Tmmerus, a little distad 



