Book IV

1 Thus far I have dealt with those classes of diseases which so affect bodies as a whole, that fixed situations cannot be assigned to them: I will now speak of diseases in particular parts. Diseases of all the internal parts and their treatment, however, will come under view more readily if I first describe briefly their institutions.

The head, then, and the structures within the mouth are not only bounded by the tongue and palate, but also by whatever is visible to our eyes. On the right and left sides around the throat, great blood-vessels named sphagatides, also arteries called carotids, run upwards in their course beyond the ears. But actually within the neck are placed glands, which at times become painfully swollen.

From that point two passages begin: one named the windpipe, the more superficial, leads to the lung; the deeper, the gullet, to the sm; the former takes in the breath, the latter food. Though their courses diverge, where they are joined, there is a little tongue in the windpipe, just below the fauces, which is raised when we