ANS

Question 1

Describe the pathway of SNS

Answer 1

Short pre and long Post, the pre act as an integration station and can coordinate many inputs and outputs

Question 2

NT of SNS

Answer 2

ACh for Pre at nicotinic Receptors and NA for Post at adrenergic receptors (ACh for some salivary glands)

Question 3

Describe the pathway of PNS

Answer 3

Long pre and short post, acts as a relay station

Question 4

NT of PNS

Answer 4

ACh for pre at Nicotinic and ACh for Post at Muscarinic receptors

Question 5

List the regions of SNS nuclei

Answer 5

In the Thoracic and upper lumbar regions in the intermediolateral cells of the spinal cord

Question 6

List the regions of PNS nuclei

Answer 6

Cranial and Saccral

Question 7

Myelination status of nerves

Answer 7

Post is not, while pre can be in some situations for both PNS and ANS

Question 8

List 6 functions of SNS

Answer 8

Increased heart rate, blood flow and contraction of heart, decreased gut motility and blood flow to gut, airway relaxation

Question 9

functions of the PNS

Answer 9

SLUD, decreased heart rate, increased gut motility, constriction of airways

Question 10

Describe location of SNS post ganglionic cells and how that relates to function

Answer 10

Paravertebral = Vasodilation while Prevertebral relate to Organ specific

Question 11

What is the nucleus of the solitary tract

Answer 11

Tract that runs through the retincula formation and terminates in the Pons/Medulla. Will receive input from CN VII, IX and X regarding all taste from the tongue/epiglottis and chemoreceptors/baroreceptors from the aortic arch and carotid bodies

Question 12

Where are the PNS nuclei located and what is there general functions

Answer 12

Ganglion are located in the parasympathetic preganglionic neurons (S1-S5) and in the reticular formation of the cervical region. They act as relay stations only, no complex integration of signals