Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Define the control of tear production.
Control of Tear Production
The lacrimal secretary system was initially thought to be comprised of two parts, basic secretors and reflex secretors. Basic secretion corresponds to the accessory glands of Krause and Wolfring and reflex secretion to the main lacrimal gland.
Now, it is thought that all lacrimal glands respond as a single unit. The aqueous Eyelids, Lacrimal and Tear Film portion of tear fluid consists of reflex and basic secretois. Basic secretion occurs under sympathetic control (by blood flow regulation through the gland). Reflex secretion is controlled by the main lacrimal gland under parasympathetic control. There are two types of reflex secretion-peripheral and central reflex. Peripheral reflex occurs by stimulation of 5th nerve in the cornea. Central reflex occurs by the stimulation of the retina or psychogenic events. The aqueous component functions in hydration, lubrication, and oxygenation of the tear film. The lipid portion of tear fluid is secreted by the meibomian glands and functions in lubrication and prevents evaporation. The mucus layer is secreted by goblet cells and converts the corneal epithelium from a hydrophobic to a hydrophilic layer.
Emerging and New Generation By-Products Oil palm by-products are good examples of NCFR which are becoming increasingly important new feeds. This is associated with the rapidly
What is Phospholipids ? Phospholipids : Phospholipids are similar to triglycerides, except that they contain only two fatty acid, and one or both of the fatty acids have
Q. Complications in dyslipidemia? The complications include: • Pancreatitis • Progressive atherosclerosis or asymptomatic coronary. Excess of triglycerides (hypertrigl
What are holandric genes? The Holandric genes are genes situated in the nonhomologous region of the Y chromosome. Holandric genes condition phenotypes that emerge only in men s
Explain the Obesity - Problems of Older Children and Adolescent Nutrition? One of the major problems is raising obesity rates (upto 30%) in urban, well-to-do school children.Th
PHYSICA L PROPERTIES All monosaccharides which have an asymmetric carbon are able to rotate polarized light either to left side ( laevorotatory ) or right side ( dextroro
Vitamins Micronutrients are as important as major nutrients for the animal body. Vitamins are organic compounds required in minute amounts to assist metabolic processes and for
Testicular Hypoplasia Hypoplasia refers to testicular disorders related to congenitally underdeveloped and underactive spermatic epithelium of one or both testes even though t
Q. After the morula stage what is the next stage? What is the morphological feature that defines this stage? In the blastula stage the compactness is lost and an internal cavit
Lyme disease It is a metazoonoses caused by a spirochaete, Borrelia burgdorferi. The disease based on the specific symptoms, is also known as erythema migrans (ECM) or lyme arthr
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd