Fill in the blanks: The sympathetic nervous system is also known as the ________ division because the cell bodies of its preganglionic neurons are located in the ________ .

Video transcript

Hi, everyone. Let's take a look at this practice problem together, the axons of the preganglionic neurons of the sympathetic nervous system that exit the spinal cord through the anterior rite of spinal nerves are called the answer. Options are a preganglionic fibers, B sympathetic ganglia, C post ganglionic fibers and D paravertebral ganglia. So this question is about the sympathetic nervous system. Let's break the question down by rewording it to help us on the screen. I am putting up a simplified drawing of what is described in the question in the drawing. A pre ganglionic neuron is drawn in blue. The axon exits the spinal cord through the anterior root of a spinal nerve and travels to the sympathetic chain ganglia. Remember this is a neuron that's part of the sympathetic nervous system. Therefore, it goes to the sympathetic chin ganglia. So simplified the question is asking what is the term for the axons of pre ganglionic neurons? So let's go through the answer. Options. Option C we can immediately eliminate. The question is about preganglionic neurons not post ganglionic. So option C is incorrect. Option D paravertebral ganglia recall are located alongside the vertebral column. They are clusters of nerve cell bodies. This is a term for nerve cell bodies, not axons. So option D is incorrect. Option B, sympathetic anglia are the clusters of nerve cell bodies of the sympathetic nervous system. So again, this term refers to nerve cell bodies, not axons. So option B is incorrect. The correct answer is option A preganglionic fibers. All right, everyone. I hope you found this helpful and I'll see you soon for the next practice problem.