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shb > Autonomics > Flashcards

Autonomics Flashcards

1
Q

Parasympathetic nervous system

A

rest and giest
placid
peaceful
calm

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2
Q

Sympathetic

A 
feed fight flee fuck
stressed
irritale
afraid
all jacked up
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3
Q

Where do parasympathetics originate>

A

brainstem (CN III, VII, IX, X)

and and sacral cord (S2-S4)

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4
Q

Where do sympathetics originate?

A 
Spinal cord (T1-L2)
lateral horns of gray matter of spina cord
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5
Q

Do fibers come from the brain?

A

No, they come from the root

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6
Q

Do brainstem cranial nerve have any symptatheic function?

A

NO

parasympathetic only

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7
Q

What is a preganglionic neuron?

A

fiber before synapse/ganglia

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8
Q

Where do sympathetic preganglionic neurons go?

A

ventral root-> white rami -> enter sympathetic trunk

motor (ventral)

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9
Q

Where are sympathetic ganglionic neurons located?

A

in sympathetic chain ganglia or collateral ganglia outside sympathetic trunk

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10
Q

Describe sympathetic pre ganglionic fibers?

A

short and myelinated

“short arm/long fingers”

EXCEPT splanchnics

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11
Q

Describe sympathetic post ganglionic fibers?

A

long and unmyelinated

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12
Q

What is vasomotor tone?

A

Sympathetic tone- always basal level of sympathetic

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13
Q

Where do parasympathetic preganglionic neurons go?

A

through cranial nerves III, VII, IX, X and S2-S4 to synpase with peripheral ganglia located near or on effector organ

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14
Q

Where are parasympathetic ganglionic neurons located?

A

within peripheral ganglia

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15
Q

Describe parasympathetic preganglionic fibers?

A

long and myelinated

“long arm/short fingers”

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16
Q

Describe parasympathetic post ganglionic fibers

A

short and not myelinated

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17
Q

What neurotransmitters are used in sympathetic?

A

pregang- Ach

Postgang- NE

18
Q

What neurotransmitters are used in parasympathetic?

A

Pregang AND postgang- Ach

19
Q

Where do splanchnics synapse?

A

close to visceral target

pregang exception to short/long rule for sympathetics

20
Q

How do autonomics relate to peni?

A

parasym- erection (point)

symp- ejaculation (shoot)

21
Q

What are the prevertebral splancnics?

A

Greater splancnic
come out of lateral horn in thoracic cord
dont synpase- go to aorta and synapse with coeliac ganglion
T5-9 = coeliac ganglion

T7-L1= superior mesenteric gang
T12 renal gang
T9-T10 inferior mesenteric gang

22
Q

What does X do?

A

slows heart and speed up digestion

23
Q

What is a spancnic?

A

Does not synapase on chain ganglia

24
Q

Where is the lateral horn of chain?

A

only present in thoracic cord

25
Q

what is a ramus?

A

Attach ganglia to spinal nerve

26
Q

What is white vs gray fibers?

A

WIGO

white in grey out

white myelinated enter the sympathetic chain glangia
Grey unmyelinated exit the chain ganglia

27
Q

How do post ganglionic sympathetic fibers get to target if there are no lateral horn (IML) in the cervical cord?

A

pre gang travel up from thoracic cord to wrap around blood vessels and follow peripheral nerves to travel with artery to get to target and synapse in the superior, middle, and inferior cervical chain ganglia

ie. dilator pupillae, tarsal muscle of eyelid, sweating of face

28
Q

What forms the enteric nervous system?

A

myenteric plexus (Auerbachs) and submucosal plexus (Meissners)

29
Q

What is Hirschprungs disease?

A

myenteric plexus ganglion cells missing because neural crest cells fail to migrate into large intestine during fetal development. Presents with baby failing to pass meconium (first stool) after delivery.

30
Q

What is miosis, ptosis, anhidrosis?

A 
miosis= constricted pupil
ptosis= drooping eye lid 
anhidrosis= not sweating
31
Q

What is horners syndrome?

A

miosis, ptosis, anhydrosis on same side

lost sympathetics- cut

32
Q

history of tachycardia. Beta blockers prescibed with hinhibit action of norepineprhinse. Why?

A

post gang sympathetic fibers release NE at the their target cells which increases heart rate

33
Q

Trouble seeing at night whch is not related to his retina or carrot consuptions. What may be the cause?

A

he lost sympathetic innervation to his pupil

34
Q

What cranial nerves have parasympathetic function?

A

3, 7, 9, 10

35
Q

What ganglion do parasympathethic system use?

A

CPOS

cillary (3),otic (9), pterygopalatine (7), submandibular (7)

36
Q

What do splancnics do?

A

pelvic = parasympathatic
from nuclei in scaral cord
pee, poop, point

sacral = sympathetic
stop pee, stop poop, shoot

37
Q

Where do parasympathethic CPOS go?

A

cillary (3)- cillary body, comonodation sphinter pupillae constricts (small pupil, round lens)
otic (9), - parotid secrets (saliva)
pterygopalatine (7)-
cry baby lacrimal grands (tears and snot)
submandibular (7)- submandibular and sublingual glands secret (saliva)

38
Q

What do 3, 7, 9, use to get to target ganglia?

A

branches of 5

10 does NOT hitch a ride

39
Q

Where does greater petrosal nerve go?

A

Joins sympathetics in nerve of pterygoid canal

40
Q

Where do sympathetics go?

A

Travel up carotid to oppose parasympathetics. they do not synapse in the ptygopalatine ganglion

41
Q

Face paralyzed on both sides with Bell’s palsy. What else is affected?

A

loss of taste- anterior tongue

loss of tears

shb (22 decks)

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