IMSPQ P2 - Neurophysiology

The points where specific neuron-to-neuron communication occurs is called …

• Junction

• Terminal

• Synapse

• Interneuron

• Neuronal chain

The first part of the axon that is known as the initial segment and arises from the soma is called …

• Initiator segment

• Axon hillock

• Soma

• Dendrite

• Hamberg's segment

Motor proteins that are required for axonal transport are … and …

• Glial cell and pyramidal cell

• Purkinje cell and motoneuron

• Kinesin and dynein

• Motor protein and astrocyte

• Cholinergic and muscarinic

In the CNS, myelin is formed by the …, whereas in the PNS … form myelin

• Schwann cell and oligodendrocytes

• Oligodendrocytes and schwann cell

• Astrocyte and satellite cell

• Satellite cell and astrocyte

• Schwann cell and satellite cell

Tetrodotoxin (TTX), one of the most potent poisons known, specifically blocks … channel

• Na+

• K+

• Ca2+

• Cl-

• Mg2+

Action potential appears to "jump" from one node of Ranvier to the next. This process is called …

• Fast conduction

• Saltatory conduction

• Myelination

• Accomodation

• Termination

What's the type of the fiber in postganglionic postganglionic fibers, especially sympathetic??

• E

• D

• C

• B

• A

Acetylcholine is synthesized from … and … by the enzyme …

• Acetyl CoA, choline, choline acetyltransferase

• Acetyl CoA, choline, acetylcholinesterase

• Acyl CoA, choline, choline acyltransferase

• Acyl CoA, choline, choline acyltransferase

• Acetyl CoA, choline, acetylcholinesterase

NO functions as a signal transduction molecule by regulating …, the enzyme that produces … from …

• Guanylyl cyclase, GTP, cGMP

• Guanylyl cyclase, cGMP, GTP

• Adenylyl cyclase, GTP, cGMP

• Adenylyl cyclase, cGMP, GTP

• Phospholipase C, ADP, ATP

Binding of GABA to GABA_B receptor activates a heterotrimeric GTP binding protein, which leads to activation of … channels

• Na+

• K+

• Ca2+

• Cl-

• Mg2+