THE MUSCLES OF THE HEAD. 



109 



FIG. 65. MUSCLES ON THE VENTRAL SURFACE OF THE THORAX, NECK AND 



HEAD. 



The left side shows the first layer of muscles beneath the skin and skin-muscles; 

 the right side shows the second layer, except in the head region, a, M. masseter; 

 b, M. digastricus; c, M. mylohyoideus; </, M. stylohyoideus ; <?, M. sternohyoideus ; 

 f, M. thyreohyoideus ; , M. sternomastoideus ; g', M. sternothyreoideus; /i, M. 

 cleidomastoideus; i, M. levator scapulae ventralis; /. M. clavotrapezius; k. M. clavo- 

 brachialis; /, M. pectoralis major; m, M. pectoantibrachialis; n, part of M. scalenus; 

 0, M pectoralis minor; /, M. xiphihumeralis; q, M. latissimus dorsi; r, M. epi- 

 trochlearis; s, caput longum of M. triceps brachii; t. M. biceps brachii; f, bicipital 

 arch; , M. acromiodeltoideus; v, M. brachialis. I, parotid gland; 2. submaxillary 

 gland; 3, lymphatic glands; 4, external ear; 5, external jugular vein; 6, manubrium; 

 7, first rib; 8, common carotid artery; 9, molar gland. 



