896 



THE SENSE ORGANS AND COMMON INTEGUMENT OF THE OX 



which occupy corresponding recesses in the ordinary epithelium; each presents a 

 minute opening, the gustatory pore. The buds consist of fusiform supporting cells 

 grouped around central gustatory cells. The latter are long and narrow ;■ the 

 peripheral end of each bears a small filament, the gustatory hair, which projects at 

 the gustatory pore; the central end is produced to form a fine process which is often 

 branched. The taste buds are innervated by fibers of the glosso-pharyngeal nerve 

 and the lingual branch of the trigeminus. 



Upper c 



Third eyelid 



Caruncula 

 lacrimulis 



Medial 

 canthus 



THE SENSE ORGANS AND COMMON INTEGUMENT OF THE OX 



THE EYE 

 The eyelids are thick, prominent, and less pliable than those of the horse. 



The lower lid bears a consideral)le number of cilia, which are, however, finer than 



those of the upper lid. The tarsal 

 glands are more deeply embedded 

 and therefore not so evident. The 

 conjunctiva of the lower lid presents 

 folds or ridges, and one or two promi- 

 nences which contain numerous leuko- 

 cytes; the conjunctival epithelium is 

 transitional in type. The superficial 

 part of the cartilage of the third eye- 

 lid is leaf or shovel-shaped and thicker 

 than in the horse; the edge bears a 

 narrower process, on which there is a 

 transverse bar, giving the arrange- 

 ment some resemblance to an anchor. 

 The gland of the third eyelid is very 

 large — an inch or more in length — 

 and may be divided into two parts. 

 The deep part is pink and consists of 

 loose lobules, but the much larger 

 superficial part is more compact. 

 There are two large and several 



smaller excretory ducts. The subconjunctival tissue of the third eyelid contains 



lymph nodules, which are specially 



numerous on the bulbar side. Canjmictim 



The lacrimal gland is thick and 



distinctly lobulated. It is more or less 



clearly divided into a thick upper and 



a thinner lower part (Glandula lacri- 



malis dorsalis, ventralis). There are 



six to eight larger excretory ducts and 



several smaller ones. The naso-Iacri- 



mal duct is shorter than in the horse, 



and is almost straight. Its terminal 



part is enclosed between two plates 



of cartilage, and it opens near the 



nostril on the lateral wall of the vesti- 

 bule of the nasal cavity; the orifice is 



placed on the medial side of the alar fold of the ventral turbinate, and is therefore 



not easilv found. 



Fig, 719.— Eve of Ox. 



Lower eyelid 



(After Ellenberger-Baum, Anat. fiir 

 Kiinstler.) 



bulbi 



Sclera 



Tliird eyelid 



Caruncula 

 lacrimalis 



Cornea 



Fig. 720.- 

 19, Orbital fat. 



Pupil 



-Left Eyeball of Ox in siiu. 

 (After Ellenberger-Baum, Anat. fiir 

 Kiinstler.) 



