Lecture 38 - Parasympathetic Flashcards

1
Q

Where do cranial nerves CNI and CNII originate

A

cerebrum

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2
Q

where do cranial nerves CNIII - XII

A

brainstem

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3
Q

Name the cranial nerves I - XII

A
  1. olfactory
  2. optic
  3. oculomotor
  4. trochlear
  5. trigeminal
  6. abducens
  7. facial
  8. vestibular cochlear
  9. glossopharyngeal
  10. vagus
  11. accessory
  12. hypoglossal
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4
Q

what is a mnemonic to help remember the cranial nerves

A

Oh! Oh! Oh!
To Touch And Feel
Very Good Velvet
Ah Heaven

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5
Q

what is a mnemonic to help remember the function of cranial nerves

A

Some Say Marry Money But My Brother Says Big Brains Matter More

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6
Q

how are functions of cranial nerves classified

A
  1. Sensory
  2. Motor
  3. Both
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7
Q

What cranial nerves have parasympathetic fibers

A

oculomotor (3)
facial (7)
glossopharyngeal (9)
vagus (10)

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8
Q

what is the function of CN1

A

smell

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9
Q

what is the function of CN2

A

vision

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10
Q

what is the function of CN3

A

eye movement (up/down, open eyelid, pupil constriction)

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11
Q

what is the function of CN4

A

moves eye down and inwards

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12
Q

what is the function of CN5

A

sensation to the face, mastication

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13
Q

what is the function of CN6

A

moves eye laterally

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14
Q

what is the function of CN7

A

facial expression, taste (anterior 2/3), glands

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15
Q

what is the function of CN8

A

hearing, balance

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16
Q

what is the function of CN9

A

taste (posterior 1/3), swallowing, salivary glands

17
Q

what is the function of CN10

A

parasympathetic supply to eye, heart, gut, lungs, larynx

18
Q

what is the function of CN11

A

rotate the head and lift shoulders

19
Q

what is the function of CN12

A

supply tongue muscles

20
Q

T/F: both pre and post-ganglionic parasympathetic fibers use acetylcholine as a neurotransmitter

21
Q

what is the role of the parasympathetic system

A

maintenance functions

  • “rest and digest”
  • D division
22
Q

what functions are encompassed by the D division

A

digestion, diuresis, defecation

23
Q

what does “SLUDD” mean

A

S - salivation
L - lacrimation
U - urination
D - digestion
D - defecation

24
Q

why are SLUDD actions typically seen in toxic cases

A

due to an overproduction of acetylcholine

25
what are the cholinergic receptors and their subdivisions
nicotinic: ionotropic muscarinic: G-coupled, M1-M5
26
What is the location and effect of: M1
location: CNS + stomach effect: Gq, depolarization, H+ secretion
27
What is the location and effect of: M2
location: heart, lungs effect: Gi, bradycardia, AV block, bronchoconstriction
28
What is the location and effect of: M4
location: CNS, heart effect: Gi signaling
29
What is the location and effect of: M3
location: smooth muscle, salivary gland, + CNS effect: Gq, bronchoconstriction, salivation, vasodilation
30
What is the location and effect of: M5
location: CNS effect: Gq signaling
31
parasympathomimetic
mimics parasympathetic system
32
parasympatholytic
opposes parasympathetic action
33
direct effect
agonist or antagonist of the receptor
34
indirect effect
nonreceptor related
35
summarize the parasympathetic effects on the eye
- constrict pupils - lens bulge - lacrimation
36
summarize the parasympathetic effects on the heart
- bradycardia, negative chronotropic - negative inotropy (contraction) - negative dromotropy (decreased AV node conduction)
37
T/F: The parasympathetic system increases GI function
TRUE - increased secretion (insulin, bile, etc.), motility
38
summarize the effect of the parasympathetic system on the UGT
- bladder contraction - releasing urethral sphincter - promote voiding
39
summarize the effect of the parasympathetic system on the reproductive systems
vasodilation increased vaginal lubrication