Question

Select all answers that are true of the nerve pathway within the ANS.

Select one or more:

a. the post synaptic/ganglionic nerve reaches a single target cell

b. it involves unmyelinated axons

c. there is only 1 nerve

d. the post synaptic/ganglionic nerve reaches multiple target cells

e. there is a synapse

f. it uses the neurotransmitter NE

g. multiple synapses are involved

h. it uses the neurotransmitter ACh

i. it involves myelinated axons

j. it consists of two nerves

Answer 1

Autonomic nervous system is a part of peripheral nervous system that controls the involutary action of smooth muscles, glands and organs. The fibres are myelinated. It innervates the target organ through sympathetic and parasympathetic innervations and regulates their functions. Sympathetic division uses adrenaline and noradrenaline as neurotransmitter to exert its effect while parasympathetic division uses acetylcholine as the neurotransmitter.
ANS pathway : The sensory neuron is stimulated through a stimulis which then generates afferent impulses carried by sensory nerves to the brain. The efferent pathway of ANS is two neuron pathway which involves preganglionic neurons to synapse on post ganglionic neurons which synapse at the effector or target cell. So ANS has multiple synapses. The sympathetic and parasympathetic fibres can bind to various receptors on the target cells. They can innervate mutiple target cells.
So we have seen that

d. post synaptic/ganglionic nerve reaches multiple target cells,

e. there is a synapse

f. it uses the neurotransmitter NE

g. multiple synapses are involved

h. it uses the neurotransmitter ACh

i. it involves myelinated axons

j. it consists of two nerves