LECTURE V 

 THE DIGESTIVE ORGANS 



PART I 



220. As some of the organs of digestion of non-ruminants, and 

 those of ruminants, present marked differences from one another, 

 and the derangements and diseases to which they are subject are 

 still more dissimilar, I shall deal with the stomach and bowels of 

 each separately, while the accessory organs of digestion, with their 

 diseases, will be considered in Part II. 



THE HORSE. 



221. The digestive organs of the horse consist of — 



(1) The Mouth. — This comprises the lips ; the cheeks ; the 



hard palate, or roof {Plate XVII., No. 1), which is in 

 the form of ridges, or bars, running from side to side, 

 between the upper molar teeth, with a longitudinal 

 line in the middle ; the soft palate, at the back of the 

 mouth, a sort of dense curtain, hanging between the 

 mouth and throat, which from its size does not allow 

 the horse to breathe through the mouth ; the tongue, 

 and the teeth. Owing to the importance of the last 

 named, they are specially dealt with in a separate 

 lecture (Lecture VII., ' The Teeth '). The mouth is 

 also lined by mucous membrane. 



(2) The Salivary Glands (situated in the region of the 



mouth). — There are three pairs of these — namely, the 

 parotid glands {Plate XV III., Fig. D), just below each 

 ear ; the sublingual, underneath the tongue ; and the 

 submaxillary below, and within the angle of the lower 



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