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Central Nervous System

10 out of 10

Blood brain barrier is deficient at (LQ)

A Area postrema
B Thalamus

C Meta thalamus
D Cerebellum

Ans. A Area postrema

The structures which are outside the BLOOD- BRAIN- BARRIER: - (All have fenestrated capillaries. and deficits Blood-brain-barrier): -are

a. Circumventricular organs: ­

i. Posterior pituitary (Neurohypophysis) Q

ii. Median eminence of Hypothalamus Q

iii. Area postrema Q

iv. Organum-vasculosum of the lamina terminalis (OVLT, supra optic crest) Q

v. Sub fornical organ (SFO) Q

b. Pineal gland and Anterior pituitary