1. The........... gives rise to the CNS while the ............... gives rise to
ID: 282681 • Letter: 1
Question
1. The........... gives rise to the CNS while the ............... gives rise to all neurons with cell bodies in the PNS.
2. The sense of _______________ is the exception to the rule that the senses go to the thalamus before being sent to the cortex.
3.
Glutamate is brought into glial cells and is converted into ___________________, which is then pumped out and sent to the presynaptic neuron that allows for glutamate synthesis to occur once again.
Aspartate
Phenylalanine
Glutamine
Tryptophan
a.Aspartate
b.Phenylalanine
c.Glutamine
d.Tryptophan
Explanation / Answer
1)neural tube gives rise to CNS and the neural crest cells give rise to neurons with cell bodies in the PNS
2) sense of smell (olfaction)
The cranial nerve 1 travels directly to the frontal lobe via the cribriform plate
3) c. Glutamine. Glutamate is converted to glutamine in glial cells which is released and taken up by the neighbouring cells which is then converted by to glutamate in these cells by glutaminase. This is required as glutamate is not available to neurons as it cannot cross the blood brain barrier.
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