2.5 The Autonomic Nervous System Part 2 Flashcards
Where do the preganglionic fibers of the parasympathetic nervous system originate?
brainstem
sacral division of the spinal cord
What is one main different between the sympathetic and parasympathetic nervous systems?
parasympathetic has more specific targets while sympathetic has more widespread targets
What is the function of the parasympathetic nervous system?
promotes all the internal responses associated with a relaxed state
What happens when the parasympathetic nervous system is stimulated?
pupil of eyes constrict
promotes digestion of food
promotes secretion of digestive glands
slows the heart rate
What is the neurotransmitter utilized by the parasympathetic nervous system?
acetylcholine
What is a neuron that releases acetylcholine known as?
cholinergic
What are the ganglia within the parasympathetic nervous system?
ciliary ganglia
pterygopalatine ganglia
submandibular ganglion
optic ganglion
intramural ganglia
What is the purpose of the ciliary ganglion?
targets intrinsic eye muscles to change the pupil and lens
What is the purpose of the pterygopalatine and submandibular ganglion?
target organs are tear production, nasal glands, and salivary glands
What cranial nerve is the ciliary ganglia associated with?
CN III
What cranial nerve are the pterygopalatine and submandibular ganglion associated with?
CN VII
What cranial nerve is the otic ganglion associated with?
CN IX
What is the purpose of the otic ganglia?
parotid gland
What is the cranial nerve that the intramural ganglia are associated with?
CN X
What is the purpose of the intramural ganglia?
visceral organs within the thoracic cavity
