THE MUSCLES 



221. Muscles are named from : their shape, as deltoid 

 (like the Greek letter delta, A ; their location, as tibialis (near 

 the tibia) ; their action, as flexors ; their manner of attach- 

 ment, as triceps (three-headed). 



.Extensors of tht Hand 

 - - . - le*on of the Hind 



Etesor, of th. Tew 



FIG. 126. Full-figure Muscles (front). 



222. THOUGHT LESSON. Anatomy and Physiology of 

 Muscles. By studying the figures, apply these four pairs of 

 adjectives in their proper places in the lines below : long and 

 round ; thin and flat ; short and narrow ; broad and flat : 



i. The muscles of the face are and . 



The muscles of the cranium are and . 



