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This presentation describes the unique anatomy and physiology of the vascular beds that serve the eye. The needs for an unobstructed light path from the cornea to the retina and a relatively fixed corneal curvature and distance between refractive structures pose significant challenges for the vasculature to provide nutrients and remove metabolic waste. To meet these needs, the ocular vascular beds are confined to the periphery of the posterior two thirds of the eye and a surrogate circulation provides a continuous flow of aqueous humor to nourish the avascular cornea, lens and vitreous compartment. The production of aqueous humor (and its ease of egress from the eye) also generates the intraocular pressure (IOP), which maintains the shape of the eye. However, the IOP also exerts a compressing force on the ocular blood vessels that is higher than elsewhere in the body. This is particularly true for the intraocular veins, which must have a pressure higher than IOP to remain patent, and so the IOP is the effective venous pressure for the intraocular vascular beds. Consequently, the ocular circulation operates at a lower perfusion pressure gradient than elsewhere in the body and is more at risk for ischemic damage when faced with low arterial pressure, particularly if IOP is elevated. This risk and the specialized tissues of the eye give rise to the fascinating physiology of the ocular circulations.

Shackleton Bailey's standard Latin text, now updated, and a revised version of his much admired translation The Ocular Circulation download ebook first published by Penguin. This authoritative edition complements the new Loeb edition of Cicero's Letters to Atticus, also translated by Shackleton Bailey. Sawako Kuronuma is the perfect heroine...for a horror movie. With her jet-black hair, sinister smile and silent demeanour, she's often mistaken for Sadako, the haunting character from Ringu. Unbeknownst to but a few, behind her scary facade is a very misunderstood teenager. Shy and pure of heart, she just wants to make friends. But when Kazehaya, the most popular boy in class, befriends her, she's sure to make more than just that - she's about to make some enemies too! Battle Royale is a high-octane thriller about senseless youth violence, and one of Japan's bestselling - and most controversial - novels. As part of a ruthless program by the totalitarian government, a group of high school students are taken to a small isolated island with a map, food, and various weapons. Forced to wear special collars that explode when thy break a rule, they must fight each other for three days until only one remains.

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Author: Kiel Jeffrey,D. Neil Granger,Joey Granger
Number of Pages: 81 pages
Published Date: 01 May 2011
Publisher: Morgan & Claypool Publishers
Publication Country: San Rafael, CA, United States
Language: English
ISBN: 9781615041688
Download Link: Click Here
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