Autonomic Innervation Flashcards Preview

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Flashcards in Autonomic Innervation Deck (56)
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1

what are the three roots of the ciliary ganglion

parasympathetic, sympathetic, sensory

2

post- ganglion lacrimal gland pathway sympathetic

internal carotid artery plexus --> deep petrosal nerve --> vidian nerve --> pterygiodpalatine ganglion (symp passes through) --> maxillary nerve --> follows zygomatic branch --> communicating branch --> lacrimal nerve

3

parasympathetic innervation iris sphincter

pupil constriction- 3%

4

direct acting agonist

cholinergic agonist aka parasympathomimetics

pilocarpine
pupil constriction + acc

5

ciliary ganglion sympathetic pathway

passes through --> BV of conj + choroid

6

cav sin --> nasociliary nerve --> ciliary ganglion

short ciliary nerves, choroidal (vasoconstriction) + conj bv

7

damage to cilairy ganglion causes

-numbness
-horner's syndrome
-blown pupil
-lack of acc
-damage NT in ganglia (only parasympathetic involved --> dilated pupil)

8

sympathetic innervation
ciliary muscle

inhibition of acc
-no clinical significance

9

agonist

replicates the action of the neurotransmitter

10

lacrimal gland (preganglion) parasympathetic

CN& nucleus (pons) --> travel w/ facial nerve --> geniculate ganglion (sensory) --> greater petrosal nerve --> vidian nerve --> pterygopalatine ganglion --> synaose

11

lacrimal gland (preganglion) sympathetic

T1-T3 spinal --> superior cervical ganglia -->

12

what is the preganglionic pathway in the parasympathetic pathway

cn3 --SOF--> inferior division --> ciliary ganglion--> synapse -->

13

cav sin --> oculomotor cn3 -->

superior branch cn3 --> muller muscle --> widening of palpebral fissure

14

clinical correlate: hippus (pupillary unrest)

sympathetic + parasympathetic balancing out
-causes pupil to continuously move slightly

15

abberent regeneration tonic pupil

accommodative fibers can grow to the sphincter

16

indirect acting agonist

adrenergic agonist

aka sympathomimetics
-hydroxyamphetamine
-cocaine
-pupil dilation

17

what is the central pathway in the parasympathetic pathway

hypothalamus --> midbrain (ew-nucleus- cn 3)

18

autonomic lacrimal innervation parasympathetic

increase lacrimal secretion

19

pupil dilation

phenylephrine: direct acting on dilator muscle
tropicamide: dilation, pupil not to constrict

20

adrenergic antagonist

aka sympatholytic
dapiprazole
reversal of mydriasis from phenylephrine

21

where do the sympathetic and parasympathetic join in autonomic pathway to the lacrimal gland

vidian nerve

22

what two sections does the cav sin break into

ophthalmic nerve + oculomotor cn 3

23

what is the post- ganglion pathway in the sympathetic pathway

-internal carotid artery plexus --> carotid canal --> cav sin

24

autonomic lacrimal innervation sympathetic

constricting blood vessels --> decrease gland secretion

25

cholinergic -->

acetylcholine

26

parasympathetic innervation ciliary muscle

accommodation - 97%

27

clinical correlate: corneal reflex - afferent

cn5 --> afferent
-senses something on cornea via nasociliary branch

28

what is a tonic pupil

pupil doesn't constrict well, inability to acc (same fibers)

29

direct acting agonist

acts directly at the receptor site

30

what does the sympathetic pathway supply

-iris (dilator + sphincter)
-cb
-muller muscle
-lacrimal gland
-blood vessels (choroid, conj)