THE RABBIT. 289 



whole ventral surface of the trunk and neck ; it is readily 

 distinguished from the skin by containing numerous blood- 

 vessels. In all probability it will be removed with the skin, 

 if not, it should be dissected off separately. 



The cervical portion of the panniculus is called the platysma 

 myoides : the fibres of its thoracic portion are gathered into a strong 

 bundle, which becomes tendinous and is inserted into the shaft of the 

 humerus at its proximal end. 



123. In the adult female, the mammary glands, 

 large, irregular, whitish masses, situated between the skin 

 and the underlying muscles, and opening externally by 

 the teats. 



124. The trachea, or windpipe, in the middle line of the 

 neck, known by its regularly arranged cartilaginous rings ; 

 it ends in front in the larynx, which is situated in the binder 

 end of the triangular space inclosed by the two rami of the 

 mandible : to see these and the following structures clearly 

 the cervical portion of the cutaneous muscle should be 

 carefully dissected away. 



125. A median mass of muscle (mylohyoid, &c.) 

 situated just anterior to the larynx and between the anterior 

 ends of the mandibular rami : in it the hyoid bone is 

 embedded; the posterior cornua (72) emerge from its 

 hinder border and pass backwards and outwards towards 

 the larynx. 



126. The submaxillary (salivary) glands, reddish, 

 ovoidal bodies, about one-third inch in length, situated one 

 on either side of the middle line, somewhat anterior to the 

 larynx. 



127. The external jugular veins, large vessels, usually 

 gorged with blood after death, lying one on either side of 

 the trachea. 



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