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EXCI 254 > ANS > Flashcards

ANS Flashcards

1
Q

ANS consist of

A

autonomic sensory neurnon, integrative center, autonomic motor neurons, enteric division

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2
Q

location of autonomic sensoru neuron

A

visceral organs and blood vessel

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3
Q

location of integrating center

A

CNS

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4
Q

location autonomic motor neurons

A

propagate from cns to various effector tissues

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5
Q

ANS innervate involuntary or voluntary muscle

A

involuntary

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6
Q

the visceral afferent and visceral efferent don’t travail together

A

false

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7
Q

afferent component is sensory or motor

A

sensory

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8
Q

efferent component is sensory or motor

A

motor

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9
Q

function of afferent component

A

autonomie réflexe (blood vessel , change in homeostie) + pain fibers

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10
Q

function of efferent component

A

regulation of visceral function

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11
Q

in which component there is 2 motor neurons in series

A

efferent

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12
Q

what does preganglionic fibers of parasympathetic division secrete

A

Ach

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13
Q

exemple of ANS

A

celiac plexus, superior mesenteric plexus, inferior mesenteric plexus

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14
Q

ANS is organized into

A

nerve ganglia plexus

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15
Q

innervation of ANS

A

involuntarilyinnervates cardiac & smooth muscle, glands of the body

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16
Q

where does ganglia in ANS lie

A

outside of spinal cord

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17
Q

function of cardiac muscle in ANS

A

increase or decrease rate/force of contraction

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18
Q

function of gland in ANS

A

increase or decrease secretion

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19
Q

ANS divided into 2 systems

A

sympathetic (thoracolumbar) + parasymptathetic (craniosacral)

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20
Q

explain the concept of visceral efferent pathway

A

They pass through the PREGANGLIONIC NEURON to synapse in the AUTONOMIC ganglion

• They then pass through to the POSTGANGLIONIC NEURON to the EFFECTOR (smooth or cardiac ms/ Glands)

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21
Q

location of neurone in the visceral efferent pathway

A

lateral grey bodies with some in the anterior horn

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22
Q

where does the synapse occurs

A

autonomic ganglia

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23
Q

when does the preganglionic neurons changed name

A

until they synapse with another visceral efferent neurone

24
Q

what are the 3 location of ganglia

A

sympathetic trunk
prevertebral ganglion
terminal ganglion

25
Q

location of sympathetic trunk

A

above diaphragm on each side of vertebral column

26
Q

which structure btw the 3 location of ganglia has impacted on structure below diaphragm

A

prevertebral ganglion

27
Q

which 2 ganglia is in the sympathetic division

A

sympathetic trunk and prevertebral ganglion

28
Q

location of prevertebral ganglia

A

T1-L2 , anterior of large abdominal arteries

29
Q

location of terminal gangilia

A

within or very close to effector that they are about to innervate

30
Q

where did the prevertebral ganglion take their name + exemple

A

from the large abdominal a.

  • > celiac ganglion (celiac artery)
  • > sup/inf mesenteric ganglion ( sup/inf mesenteric artery)
31
Q

tje sympathetic trunk and prevertebral ganglia receive their preganglionic fiber from ?

A

thoracolumbar sympathetic division

32
Q

terminal ganglion receive preganglionic fibers directly from

A

craniosacral parasympathetic division

33
Q

all ganglia of terminal ganglion receive what

A

preganglionic neurons/fibers

34
Q

location of preganglionic fiber to their cell bodies

A

lateral grey horn of spinal cord

35
Q

pathway of autonomic efferent fibers

A

The Autonomic Efferent Fibers leave by the ventral root of the spinal nerve accompanying the Somatic Efferent Fibers

36
Q

what are the spinal segment involved in the sympathetic division and the name

A

TI-T2,L1,L2

thoracolumbar division

37
Q

what does the sympathetic trunk division influence

A

organ above diaphragm

38
Q

what does the prevertebral ganglion (celiac ganglion) influence

A

structure below diaphragm

39
Q

where does the preganglionic fiber sympathetic trunk enter

A

white rami communicant from ventral rams of spinal cord

40
Q

where does the postganglionic fibers of sympathetic trunk enter the ventral rami of spinal nerve

A

grey rami communicant

41
Q

what are the name of the presynaptic nerve in the prevertebral ganglia + location

A

splanchnic nerve

below diaphragm

42
Q

presynaptic neurone may synapse with only one postsynaptic neuron in the sympathetic division

A

false with as many as 20 postsynaptic neurons

43
Q

which division have a wide spread effect on the body

A

sympathetic response

44
Q

other name of the celiac plexus

A

solar plexus

45
Q

what is comprised in the celiac plexus

A

paired celiac ganglia, sup mesenteric ganglia, smaller ganglia

46
Q

location of celiac plexus

A

anterior aorta at the origin of celiac artery

47
Q

location of preganglionic cell Bodie go parasympathetic division

A

lateral grey horn and nuclei of cranial nerve III,VII,IX,X

48
Q

from where are the pregranglionic fibers of parasympathetic division

A

cranial nerve 3,4,9,10 and corresponding ventral root of spinal nerve S2-S4

49
Q

name of the terminal intramural ganglion division

A

craniosacral division

50
Q

what is release by the postganglionic fibers in sympathetic division and name of fibers

A

norepinephrine

adrenergic fibers

51
Q

function of sympathetic division

A
  • increase activity of organ
  • prepare individual for emergency situation
  • increase heart rate, aggression, adreanile production
  • increase blood flow to skeletal and cardiac muscle (vasodilation)
  • vasoconstriction of non essential organ
52
Q

name of fibers of sympathetic division

A

adrenergic fibers

53
Q

what is the exception in the sympathetic division

A

sweat glands release ach

54
Q

what does postganglionic fibers relates in parasympathetic division

A

acethylcoline

55
Q

function of parasympathetic division

A
  • decreacse activity
  • maintain organ level of activity to pressure
  • homeostasis
  • dominant in non-stressful situation
56
Q

is the sympathetic and parasympathetic division always working together

A

yes because they cause opposite response

EXCI 254 (10 decks)

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