Question

Which of the following represents the correct direction of passage of an impulse in a multipolar neuron?
A. Collaterals- axon- Soma- Dendrite
B. Dendrites- Soma- Axon-Terminal arborization
C. Dendrites- Axon-Soma= Collaterals
D. Soma-Dendrite = Axon = Terminal arborization

Answer 1

Hint: The passing of information from axons to dendrites carry through neurotransmitters. Neurotransmitters are neuron signals which pass information in the form of transmitters. In a nerve ganglia or neuron or nerve cell, the dendrites are placed in the head region which is exactly the posterior to another neuron.

Complete answer:
Option A: Collaterals- axon- Soma- Dendrite- axon is the terminal end of the neuron cell, then dendrite is present at the head region.
Option A is not the correct answer.
Option B: Dendrites- Soma- Axon-Terminal arborization- action potential is the transmission of neuro-transmitters from axon to the dendrites.
Option B is the correct answer.
Option C: Dendrites- Axon-Soma= Collaterals- signal propagation or signal transduction is the transmission of signals as in information from one axon ending to dendritic anterior head.
Option C is not the correct answer.
Option D: Soma-Dendrite = Axon = Terminal arborization- terminal arborization is the stoppage of signals resulting that action potential is over. No further signal transduction will occur.
Option D is not the correct answer.

Therefore, Option B is the correct answer.

Note:
Nerve cell or neuron is the functional and structural unit of the nervous system. The presence of nerve ganglia, axons and dendritic cells all combine to form the nerve cell. The nerve cell has only one major function to carry and process information in the form of signals through neuro-transmitters. A nerve cell has a head, cell body and tail.