SYSTEMATIC SYNTHESIS OF TISSUES INTO ORGANS. 247 



503. THE TBAPEZIUS (or monk's cowl) hangs down 

 from the back of the head, a thin muscle, the fasciculi 

 of which reach out and take hold of the shoulder-blade 

 (Scapula), which is raised toward the head by the upper 

 part, drawn back by the middle part, and downward by 

 the lower part, and moved in a rotary manner by the 

 successive contraction of the fasciculi. (1, Fig. 1, PL 22.) 



'504. THE TKAPEZIUS WILL ILLUSTRATE the effects of 

 culture in producing graceful motions ; for if its fasciculi 

 are called into action successively, a curvilinear motion 

 will be exhibited, while if whole clusters of them act at 

 once, angular and abrupt motions must be the conse- 

 quence. The successive action of parts of a muscle, and 

 of several muscles, can only be obtained by much cul- 

 ture, and is one of the greatest accomplishments. 



605. Illus. THE OCCUPATION OF ALMOST EVERT MECHANIC CAN BE 

 RECOGNIZED in his every-day life when away from his shop, the muscles 

 being so apt to act in accordance with the habit of exercising them. 



506. THE LEVATOR ANGULI SCAPULA, (5, Fig. 1, PL 

 21,) is used to shrug the shoulder, and hence sometimes 

 called the Frenchman's muscle. 



507. Remark. WHEN THE SHOULDERS ARE MADE FIRM, the prece- 

 ding muscles will move the head and neck, as will some of those adapt- 

 ed to move the head assist in raising the ribs if the head is held firm ; 

 observe that action of the neck-cord. 



508. THE SUBCUTANEOUS CERVICAL is a broad thin 

 lamina that originates in the tissue of the upper part of 

 the chest, and extends up just beneath the skin, to which 

 some of its fibres are attached, to the lower jaw, melting 

 into the parts covering it. Its contractions assist in giv- 

 ing expression (also called Platysma Myoides, Fig. 178.) 



509. THE DIGASTRIC MUSCLE, as its name signifies, 

 has two fleshy parts, with an intervening tendon that 

 slips through a loop on the side of the hyoid bone, from 

 which the front part of the muscle extends up to the 



503. Describe. 504. What will ? 505. How? 506. Describe 

 SOT. What effect ? 508. Describe . 509. Describe . 



