50 MUSCLES AND TENDONS 



3) Prepare muscle fibre by plunging the leg of a freshly 

 killed frog into water at 131 F. and allowing it to cool. 

 Teaze out the muscle fibres with needles in a normal salt solu- 

 tion. Examine under microscope and sketch. 



4) Location of various muscles: Identify 10 of the muscles in 

 Plate II by attempting movement against resistance and then 

 locating the muscles which are contracted. Trace from origin 

 to insertion. 



5) Arrangement of tendons : Using the same method as in 4) , 

 determine whether the muscles have tendons at one or at both 

 ends. 



