Which of the following is NOT characteristic of the sympathetic division of the
ID: 3505593 • Letter: W
Question
Which of the following is NOT characteristic of the sympathetic division of the autonomic nervous system? Multiple Choice
Preganglionic neurons tend to be long, with the ganglion located in or near the effector target tissue(s).
Preganglionic neurons are short and synapse in ganglia located near the spinal cord.
Preganglionic neurons release acetylcholine at synapses with postganglionic neurons.
Postganglionic neurons release norepinephrine at their neuroeffector junctions.
Postganglionic neuron cell bodies are located in the collateral chain ganglia (sympathetic trunk).
Explanation / Answer
Autonomic nervous system has two divisions 1) sympathetic
2) parasympathetic
Answer is
1st option that is preganglionic neurons tend to be long with ganglion located in or near the effector target tissue .this statement is wrong
Preganglionic fibers are located between first thoracic segment and third lumbar segment s.they originate from thoracolumbar region.Their cell bodies are located at intermedeiolateral nuclei of spinal cord.They are shorter and they travel upto a ganglion which can be either paravertebral or prevertebral ganglia and then synapse postganglionic neuron.
Post ganglionic neurons are much longer from there they extend their process along the body.
At the synapse with ganglia release acetylcholine which is a neurotransmitter .It activates nicotinic acetylcholine receptors on postganglionic cells which in turn releases norepinephrine at this neuroeffector junction.
The norepinephrine activates peripheral tissues containing adrenergic receptor s .
The post ganglionic neurons of act on sweat glamds,adrenal s excetra.
Postganglionic neuron cells are located in collateral chain ganglia.
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