Physiology of Autonomic Nervous System

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Which division of the autonomic nervous system is responsible for the 'rest and digest' functions?

Splanchnic

Craniosacral

Parasympathetic (correct)

Sympathetic

Which nerve carries fibers to the heart, lungs, stomach, upper intestine, and ureter?

Glossopharyngeal nerve (IX)

Vagus nerve (X) (correct)

Trochlear nerve (IV)

Olfactory nerve (I)

Which division of the autonomic nervous system is associated with the 'fight or flight' response?

Sympathetic (correct)

Splanchnic

Parasympathetic

Craniosacral

Which segment of the spinal cord gives rise to parasympathetic nerve fibers?

Sacral segments Signup and view all the answers

Which function is NOT associated with the sympathetic nervous system?

Diversion of blood flow from muscles to skin Signup and view all the answers

What are the functions of the cranial nerves III, VII, and IX in the parasympathetic nervous system?

Affect both pupil size and salivary gland secretion Signup and view all the answers

Which division of the autonomic nervous system is responsible for fear, flight, or fight responses?

Sympathetic Signup and view all the answers

What is the main function of the sacral fibers in the parasympathetic nervous system?

Innervate smooth muscles in the digestive system Signup and view all the answers

Which part of the nervous system enables the body to be prepared for fear, flight, or fight responses?

Sympathetic nervous system Signup and view all the answers

What are the functions of the vagus nerve (X) in the parasympathetic nervous system?

Innervates smooth muscles in the digestive system Signup and view all the answers

Where do the cell bodies of motor neurons reside in the somatic nervous system?

In the brain or spinal cord Signup and view all the answers

What is the main anatomical difference between the motor pathways of the somatic nervous system and the autonomic nervous system?

Somatic neurons have one motor neuron, while autonomic neurons have chains of two motor neurons Signup and view all the answers

Where are the sympathetic ganglia located?

Close to the spinal cord Signup and view all the answers

Which type of neurons are characteristic of parasympathetic innervation of visceral targets?

Long preganglionic and short postganglionic neurons Signup and view all the answers

What is the origin of the sympathetic nervous system?

Lateral horns of spinal segments T1-L2 Signup and view all the answers

What type of muscle does visceral motor innervate?

Smooth muscles Signup and view all the answers

What is the function of the dorsal root ganglion?

That is sensory Signup and view all the answers

What is the composition of the peripheral nervous system?

Formed by neurons and their process present in all regions of the body. Signup and view all the answers

What are the locations of parasympathetic ganglia?

Close to or on target organs. Signup and view all the answers

Where do preganglionic neurons of parasympathetic innervation originate from?

Long axons extending to the organ they serve. Signup and view all the answers