Choroid of eye ball is a thin membrane lying between the sclera and retina. It is loosely attached to the sclera by the lamina fusca except where vessels and nerves pass through. The internal surface is in intimate contact with the pigmentary layer of the retina. The chorioid is generally dark brown in colour but […]
The Sclera of eye ball is a dense white fibrous membrane forming about four fifths of the fibrous tunic of the eyeball. Thickest in the vicinity of the posterior pole, it thins at the equator and increases in thickness toward the junction with the cornea. It is often pigmented. When non-pigmented it shows a bluish
The cornea forms the anterior one fifth of the fibrous tunic. It is transparent, colorless, and avascular. It is oval, the broad end being medial. The anterior surface is convex and more curved than the sclera. The posterior surface is concave and forms the anterior boundary of the anterior chamber. The margin joins the sclera where the sclera overlaps
The tunics are three in number-external fibrous, middle vascular and internal nervous. Fibrous tunic of eye ball The fibrous tunic is composed of an anterior transparent, avascular part called the cornea and a posterior opaque, vascular part known as the sclera.
Peri-orbita of eye ball is a conical fibrous sheath that encloses the eyeball with muscles, vessels and nerves. Its apex is attached around the optic and orbital foramina and its base is in part attached to the bony rim of the orbit, in part continues with the fibrous layer of the lids. Its medial part
Anatomy of Eye The eye is the organ of vision. Anatomy of Eye comprises of the eyeball, optic nerve and certain associated structures as orbit, orbital fasciae, muscles, eyelids, conjunctiva and lacrimal apparatus. The Science dealing with the structure, functions and diseases of the eye is known as Ophthalmology. The powers of vision and the adaptation of lenses or prisms
Aesthesiology deals with the description of the sense organs which receive external stimuli and conduct impulses to the brain which result in sensations of sight, hearing, taste, smell, touch, pain, temperature and pressure. These sensations are received and transmitted as nerve impulses to the central nervous system by receptors, which may be specialized structural modifications
Horse The lymph nodes are more numerous, smaller and occur in groups unlike in the ox in which they are less numerous, compact and larger. The mesenteric lymph nodes are situated in the great mesentery chiefly near its root. The cubital lymph nodes are present behind the biceps brachii on the brachial vessels and median
Precrural lymph nodes It is situated superficially in front of the tensor fasciae latae about a handbreadth above the patella. Afferents: Skin of leg, thigh, hip, abdomen and muscles of these regions. Efferents: To deep inguinal and internal iliac nodes. Sacral lymph node It consists of medial and lateral groups. The medial lymph nodes are inconstant and lie on
Visceral lymph nodes include Gastric lymph nodes and Mesenteric lymph nodes GASTRIC LYMPH NODES These are (i) ruminal (ii) reticular (iii) omasal and (iv) abomasal nodes. Three or four glands situated on the right face of the atrium are the atrial nodes. They receive afferents from spleen, reticulum, rumen and the efferents of the other gastric
