84 



GENERAL ANALYSIS. 



275. IF RINGS OR PARTIAL RINGS OF CELLS BE SO IN- 

 TERWOVEN AS TO form a pouch, its contents may be com- 

 pressed, moved about, or expelled, according to the pe- 

 culiar action of the rings. 



2 76. MUSCLES MAY THEREFORE BE CLASSED us follows : 



( Direct. 



MUSCLES -J Circular. 



( Pouched. 



277. Position. IT is EVIDENT that if a part to be 

 moved by a direct muscle is small, only a few cells can 

 be attached to it, so that if it is to be moved with much 

 force, a modified arrangement must be made. 



278. IF A SMALL, STRONG CORD, OR IF A MEMBRANE, 



is ATTACHED to the part to be moved, the cells in any 

 required number can be attached to it, and though they 

 will be obliged to act at some disadvantage, yet their 

 number can be correspondingly increased. 



. 81. 



Fig. 81, 1, Bone supporting those of a finger; 2, tendon, 

 branching at * to each side of b ; 3, tendon passing between 

 branches of 2, and attached to the tip-bone, c. Muscles in the 

 arm connect with these tendons. 



Fig. 82* beautiful view of some parts of a Hand. 1, 2, ar- 

 teries ; 9, 10, tendons, corresponding to 2, 3, Fig. 80, that ex- 

 tend up the wrist to the muscle-cells connected with them in the 

 lower front part of the arm. 



275. What -? 276. How may ? 277. What ? 278. What T Describe 

 Fig. 81. Fig. 82. 



