20 Questions
Which neurotransmitter is used by postganglionic sympathetic neurons?
Norepinephrine
Which neurotransmitter is used by preganglionic neurons in both the sympathetic and parasympathetic nervous systems?
Acetylcholine
Which receptors are found on the target tissues of postganglionic sympathetic neurons?
Adrenergic receptors
Which receptors are found on the target tissues of postganglionic parasympathetic neurons?
Muscarinic cholinergic receptors
Which neurotransmitter is primarily used by most visceral afferents?
Substance P
Which region of the brain receives afferents related to cranial nerves VII, IX, and X?
Nucleus solitary tract (NST)
Which branch of the autonomic nervous system is responsible for energy conservation and anabolic processing?
Parasympathetic Nervous System
What is the function of the craniosacral division of the Parasympathetic Nervous System?
Promotes GI processes required to digest and absorb nutrients
Where are the preganglionic neurons of the Parasympathetic Nervous System located?
Brainstem and sacral segments of spinal cord
Which cranial nerves are involved in the innervation of the head and neck region by the Parasympathetic Nervous System?
III, VII, IX, X
What is the function of the dorsal motor nucleus in the Parasympathetic Nervous System?
Innervate smooth muscle and glands of the entire GI tract
Where are the cell bodies of the vagus nerve located?
Brainstem nuclei
Which part of the body coordinates autonomic reflexes related to the mouth, stomach, intestines, and pancreas after a meal?
The hypothalamus
What type of adjustment does the autonomic system make in response to environmental events?
Cardiovascular adjustment
What is the typical local response to visceral pain that only involves the afferent neuron?
Axon reflex
Which plexus is known as the 'Little brain of the gut'?
Myenteric plexus
What is the role of vagal baroreceptors in the baroreceptor reflex?
Detect increase in blood pressure
What is the result of an increase in vagal parasympathetic nervous system (PNS) activity in the baroreceptor reflex?
Bradycardia
What may the system respond with to a low-intensity stimulus that may not reach the central nervous system (CNS)?
All of the above
How many major organized plexuses are there in the gastrointestinal (GI) tract?
Two
Quiz on the Parasympathetic Nervous System: Test your knowledge on the energy conservation and anabolic processing functions of the PNS, as well as its role in promoting GI processes and efficient energy use.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
