Wednesday, 21 October 2015

Cell in Cerebral Cortex MCQ | AIPGMEE, AIIMS Preparations

Which cells are not present in cerebral cortex

a) Purkinjc       b) Stellate         c) Cajal      d) Pyramidal 

Ans (a)1 Purkinje are present in cerebellum and other three arc present in cerebral cortex. (cerebrum)
Ref. Purkinje cells (wikipedia)
Purkinjc cells - are a class of GABAergic neurons located in the cerebellar cortex. These are a special type of nerve
cell that carries each and every piece of information outputted by the cerebellum. The cells passes a great deal of
control over the refinement of motor activities.

Cajal cells = Cajal cells of cerebral cortex am special cells or horizontal cells located in the I" layer (molecular layer I) in the cortex. Cajal retzius cells establish early neuronal circuitry in the developing brain and express a number of genes known to be important in human cerebral development.
Stellate cells:  Star shaped cells in the 2'''' and 4'" layer of the cortex and large stellate cells in the deeper part of 3'" layer in the visual cortex.
Pyramidal cells =  A pyramidal cells (or pyramidal neuron, or projection neuron) is a multipolar neuron located in the hippo campus and cerebral cortex. Pyramidal neurons compose 800/0 of neurons in cortex and release glutamate as their neurotransmitter.
making them the major excitatory component of the cortex.

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