Autonomic Nervous System Quiz

Which of the following accurately describes the organization of the nervous system?

The nervous system consists of the central nervous system, peripheral nervous system, and autonomic system

Which of the following is a function of the parasympathetic system?

Preganglionic vs postganglionic neurons

Which cranial nerve is responsible for the sense of smell?

Olfactory nerve

Which part of the nervous system consists of the brain and spinal cord?

Central nervous system Signup and view all the answers

What is the function of the autonomic nervous system?

To control smooth muscle, cardiac muscles, and glands Signup and view all the answers

How many pairs of cranial nerves are there?

12 Signup and view all the answers

What is the connective tissue wrapping found between the fascicles and binding all the fascicles together in a peripheral nerve?

Epineurium Signup and view all the answers

Which structure does the axon of the lower motor neuron pass through to reach the target organs?

Ventral (anterior) root Signup and view all the answers

Where is the cell body of the afferent axon located?

Dorsal root ganglion Signup and view all the answers

Which rootlets form the ventral and dorsal roots of the spinal nerve?

Mixed rootlets Signup and view all the answers

Which primary ramus provides motor innervation to the muscles of the trunk and abdomen at the thoracic level?

Ventral primary ramus Signup and view all the answers

Which nerves are responsible for transmitting sensory information from the abdominal viscera?

Thoracic and lumbar splanchnic sympathetics Signup and view all the answers

Where do somatic and visceral synapses occur in the spinal cord?

Dorsal root Signup and view all the answers

What is referred pain?

Visceral pain perceived as somatic over a specific dermatome region Signup and view all the answers

What is the purpose of knowing the dermatome pattern?

To help clinicians investigate the source of pain Signup and view all the answers

Which of the following accurately describes the pathway of postganglionic fibers in the sympathetic nervous system?

They enter dorsal or ventral rami Signup and view all the answers

Where do the preganglionic cell bodies of the parasympathetic system originate?

In the cranial nerves III, VII, IX, and X Signup and view all the answers

What does the sympathetic system primarily do?

Dilates the pupil of the eye and increases the heart rate Signup and view all the answers

What is the function of the parasympathetic system?

Decreases the heart rate and increases GI activity Signup and view all the answers

Which part of the autonomic nervous system is responsible for the innervation of smooth muscle, cardiac muscle, certain glands, and other visceral organs?

Sympathetic system Signup and view all the answers

What is the main difference between the autonomic system and the voluntary motor system in terms of nerve fibers?

Nerve fibers in the autonomic system do not end in a structure like voluntary muscle fibers Signup and view all the answers

Where are the cell bodies of the preganglionic neurons of the sympathetic system located?

In the lateral horn of the spinal cord Signup and view all the answers

Which of the following is NOT a possible path for preganglionic fibers in the sympathetic system?

Pass through the chain and synapse in a ganglion closer to the target organ Signup and view all the answers