File:The Horse - its treatment in health and disease, with a complete guide to breeding, training and management (1905) (14761746794).jpg

Identifier: horseitstreatmen01axej (find matches)
Title: The Horse : its treatment in health and disease, with a complete guide to breeding, training and management
Year: 1905 (1900s)
Authors: Axe, J. Wortley
Subjects: Horses
Publisher: London : Gresham
Contributing Library: Webster Family Library of Veterinary Medicine
Digitizing Sponsor: Tufts University

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ans the upper surface of the globe ofthe eye. It forms the anterior limitof the hollow of the eye, and is thebase of attachment of the upper eyelid.The Eye.—The eye occupies adeep bony cavity on the side of theforehead and beneath the orbital-arch. It is protected by two movablecurtains, the upper and lower eyelidsand their appended lashes, which notonly serve to protect from and to dis-place any foreign matter that may fall upon it, but also assist in regulating the amount of light passing into it.The parts visible in ordinary observation of this organ are—1, a denseopaque membrane, the sclerotic or white of the eye; 2, a central trans-parent membrane, the cornea. These form the outer capsule in front,within which may be noticed 3, a yellowish-brown ovoid membrane, theiris, encircling a clear dark space, 4, the pupil. An examination of theinner corner of the eye reveals a flat fleshy-looking body termed the mem-brana nictitans, or, commonly, the third eyelid or haw (fig. 8). This
Text Appearing After Image:
Fig. 8.—Examination of («) the Hawor membrana uictitans 12 THE EXTERIOR OF THE HORSE organ is composed of a thin piece of cartilage covered with mucous mem-brane. It is capable of being projected over the surface of the eye, and byits thin edge may be made to sweep away any foreign matter that mayaccidentally fall upon it. Deep pressure applied to the upj^er lid with thefinger, as shown in fig. 8, will cause the haw to protrude. The Cheeks.—The cheeks form the greater portion of the side ofthe tace. They extend from the temples and throat above to the anglesof the mouth below. In front they reach to a vertical line drawn down-ward from the outer corner of tlie eye to the nostrils, and behind extendalong the posterior edge of the lower jaw. The upper part of the cheek isbroad and flat, and corresponds to the expanded portion of the lower jaw-bone. The inferior portion is narrower, loose in its arrangement, and moredistensible. In the groove dividing the two parts are lodged the ma

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