intro to ANS

Question 1

autonomic nervous system (ANS) divisions

Answer 1

SNS, PSNS, ENS

Question 2

ANS function

Answer 2

regulates organs or tissues involved in homeostasis

Question 3

autonomic efferent components (2)

Answer 3

preganglionic neuron with cell body in CNS and postganglionic neuron with cell body in ganglion

Question 4

sympathetic nervous system (SNS) function

Answer 4

fight or flight response; supplies skin, limb, blood vessels and muscles

Question 5

SNS preganglionic neuron cell body

Answer 5

T1-L2

Question 6

SNS postganglionic neuron cell body

Answer 6

sympathetic chain (sometimes outlying ganglia)

Question 7

parasympathetic nervous system (PSNS) function

Answer 7

rest and digest response; most active under quiet conditions; no supply to skin, limbs, blood vessels or muscles

Question 8

PSNS neuron cell body

Answer 8

CN3,7,9,10 or S2-4

Question 9

CN3 name and functions (3)

Answer 9

oculomotor - eye movements, pupil constriction, lens shape

Question 10

CN7 name and functions (2)

Answer 10

facial - facial expression and taste

Question 11

CN9 name and functions (2)

Answer 11

glossopharyngeal - blood pressure changes and swallowing

Question 12

CNX name and functions (2)

Answer 12

vagus - thoracic and abdominal organ function

Question 13

SNS neurotransmitters

Answer 13

acetylcholine and noradrenaline

Question 14

SNS acetylcholine

Answer 14

acts on postganglionic neuron via nicotinic receptors

Question 15

SNS noradrenaline

Answer 15

acts on target tissue via adrenoceptors

Question 16

PSNS acetylcholine

Answer 16

acts on target tissue via muscarinic receptors

Question 17

acetylcholinesterase

Answer 17

breaks down acetylcholine for recycling

Question 18

monoamine oxidases

Answer 18

breaks down noradrenaline for recycling

Question 19

which adrenoceptor subtype is noradrenaline more likely to stimulate?

Answer 19

alpha

Question 20

which adrenoceptor subtype is adrenaline more likely to stimulate?

Answer 20

both alpha and beta

Question 21

dysautonomia

Answer 21

inappropriate ANS activation due to neurodegenerative diseases, drugs, diabetes or post-viral syndromes