THE MUSCLES OF THE HEAD. 



109 



Fig. 65. — Muscles on the Ventral Surface of the Thorax, Neck and 



Head. 

 The left side sliows 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. niasseter; 

 /', M. digastricus; c, M. mylohyoideus; d, M. stylohyoideus; e, M. sternohyoideus; 

 /, M. thyreohyoideus; g, M. sternoraastoideus; g" , M. sternothyreoideus; h, M. 

 cleidomastoj^eus; i, M. levator scapulas ventralis; J, M. clavotrapezius; k, M. clavo- 

 brachialis; /, M. pectoralis major; ni, M. pectoantibrachialis; «, part of M. scalenus; 

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

 trochlearis; s, caput longuin of M. triceps brachii; t, M. biceps brachii; t', 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 r\\)\ 8, common carotid artery; 9, molar gland. 



