Exam 3: Autonomic Nervous System Flashcards
Who is the supreme overseer of the autonomic system?
Hypothalamus
Where is the preganglionic cell body of the SANS?
Thoracolumbar
Where is the preganglionic cell body of the PSANS?
Brainstem and sacral spine
What does the preganglionic cell body of the SANS and PSANS release in the ganglion? What is the receptor for this in the ganglion?
Ach
Nicotinic receptor
Where is the cell body of the somatic motor system located?
Ventral horn spine
What does the cell body of the somatic motor system release? What is its receptor?
Ach
Nicotinic
What does the postganglionic neuron release in the SANS? What are the receptors?
Norepinephrine
α and β
What does the postganglionic neuron release in the PSANS? What are the receptors?
Ach
Muscarinic
Which axon is longest for the SANS, preganglionic or postganglionic?
Postganglionic
Which axon is longest for the PSANS, preganglionic or postganglionic?
Preganglionic
Where are the postganglionic cell bodies located for SANS innervation to the eye?
Cranial cervical ganglia
What cranial nerves supply PANS to the head?
3, 7, 9, 10
Who supplies PANS innervation to the thorax and cranial abdomen?
Vagus nerve
Who supplies SANS innervation to the caudal abdomen?
Splanchnic nerves
Who is fight or flight, SANS or PSANS?
SANS
Who is rest or digest, SANS or PSANS?
PSANS
Which connects to the adrenal gland, SANS or PSANS?
SANS
How do fibers from the thoracolumbar SANS get to the areas cranial or caudal to these spinal cord segments?
Sympathetic trunk
What is the ganglion for the SANS to the bladder?
Caudal mesenteric ganglion
What makes the pupil constrict, SANS or PSANS?
PSANS
What is the ganglion for pupil constriction called?
Ciliary ganglion
What is the postganglionic nerve for pupil constriction called?
Short ciliary nerve
What makes the pupil dilate, SANS or PSANS?
SANS
What makes you salivate?
Smell
CN 7: mandibular and sublingual salivary glands
Cn 9: Parotid and zygomatic salivary glands
If you had been in a car accident and had to have one of the two pupil descriptions, which would you want to have, bilateral fixed and dilated or bilateral miosis?
Bilateral miosis
What is miosis?
Constricted pupil
What is mydriasis?
Dilated pupil
What is anisocoria?
Different pupil sizes
