VI. 



THE MUSCLES. 

 A. The Parts of a Muscle. 

 Material. A chicken, pigeon, or fore leg of a lamb. 



Examine the muscles of some small animal, as a chicken, 

 a pigeon, or the fore leg of a lamb. Dissect carefully one 

 entire muscle, but do not cut it away. 



Notice : 



a. The belly is the red central part. 



1. What is its shape when contracted ? 



2. What is its shape when relaxed ? 



b. The tendons are attached at either end. 



. 1. What is their texture ? 

 2. What is their use ? 



c. At how many places is a muscle attached ? 



d. The origin is the less movable attachment of the 

 muscle. 



e. The insertion is the more movable attachment of the 

 muscle. 



/. Which is the origin and which is the insertion of 

 the muscle that you have dissected? 

 g. Sketch. 



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