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Physiology

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Central Nervous System

Question
14 out of 18
 

Osmoreceptors are present in:



A Pons
B Medulla

C Anterior hypothalamus
D Posterior pituitary

Ans. C Anterior hypothalamus
  1. AVP release is regulated primarily by OSMORECEPTORS found in the HYPOTHALAMUS.
  2. Changes in the concentration circulating plasma solutes to which the cellular membrane is impermeable bring about alterations in the volume of the osmoreceptor cells, which in turn change the electric activity of the neurons and control both the synthesis and release of AVP. As a consequence of this mechanism between effective plasma osmolality and AVP release, plasma osmolality is generally maintained within a very narrow range.

Central Nervous System Flashcard List

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