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MD2002 > ANS 1 > Flashcards

ANS 1 Flashcards

1
Q

where do pre-ganglionic fibres originate from?

A

CNS

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2
Q

where do post-ganglionic fibres originate from?

A

autonomic ganglia

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3
Q

where in the CNS do sympathetic pre-ganglionic fibres originate?

A

thoracolumbar

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4
Q

where in the CNS do parasympathetic pre-ganglionic fibres originate?

A

craniosacral

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5
Q

where in the CNS do sympathetic post-ganglionic fibres originate?

A
  • paravertebral chain

- prevertebral ganglia

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6
Q

where in the CNS do parasympathetic post-ganglionic fibres originate?

A

in or near target organ

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7
Q

what innervation controls pupillary dilator muscle?

A

sympathetic

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8
Q

what is another term for pupillary dilation?

A

mydriasis

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9
Q

what innervation controls pupillary constrictor muscle?

A

parasympathetic

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10
Q

what is another term for pupillary constriction?

A

miosis

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11
Q

when bladder is filling, what part of ANS controls predominantly?

A

sympathetic

  • relaxation of detrusor muscle
  • contraction of internal sphincter muscle
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12
Q

when bladder is full, what part of ANS controls predominantly?

A

parasympathetic

  • contraction of detrusor muscle
  • relaxation of internal sphincter muscle
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13
Q

what are the effects of parasympathetic innervation?

A

“rest and digest”

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14
Q

what are the effects of sympathetic digestion?

A

“fight or flight”

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15
Q

what do chromaffin cells release?

A
  • adrenaline (80%)

- noradrenaline (20%)

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16
Q

where do pre-ganglionic sympathetic fibres synapse?

A

on chromaffin cells

17
Q

what synapses on chromaffin cells?

A

pre-ganglionic sympathetic fibres

18
Q

what effect does the parasympathetic nervous system have on the heart?

A

decreases HR

19
Q

what effect does the sympathetic nervous system have on the heart?

A
  • increases HR

- increases force of contraction

20
Q

what effect does the parasympathetic nervous system have on the digestive tract?

A

increases motility and secretion

21
Q

what effect does the sympathetic nervous system have on the digestive system?

A

decreases motility and secretion

22
Q

what effect does the parasympathetic nervous system have on the lungs?

A

bronchoconstriction

23
Q

what effect does the sympathetic nervous system have on the lungs?

A

bronchodilation

24
Q

what effect does the parasympathetic nervous system have on the urinary bladder?

A

release of urine

25
Q

what effect does the sympathetic nervous system have on the urinary bladder?

A

urinary retention

26
Q

what effect does the parasympathetic nervous system have on the eye?

A

constricts (miosis)

27
Q

what effect does the sympathetic nervous system have on the eye?

A

dilates (mydriasis)

28
Q

what effect does the parasympathetic nervous system have on the male sexual organs?

A

erection

29
Q

what effect does the sympathetic nervous system have on the male sexual organs?

A

ejaculation

30
Q

what effect does the sympathetic nervous system have on the male sexual organs?

A

ejaculation

31
Q

what effect does the parasympathetic nervous system have on the blood vessels?

A

no effect (mostly)

32
Q

what effect does the sympathetic nervous system have on the blood vessels?

A

constriction (mostly)

33
Q

what effect does the parasympathetic nervous system have on the salivary glands?

A

increases secretion

34
Q

what effect does the parasympathetic nervous system have on the sweat glands?

A

no effect

35
Q

what effect does the sympathetic nervous system have on the sweat glands?

A

increases secretion

36
Q

what effect does the parasympathetic nervous system have on the liver?

A

no effect

37
Q

what effect does the sympathetic nervous system have on the liver?

A
  • glycogenolysis

- gluconeogenesis

38
Q

what effect does the parasympathetic nervous system have on pilomotors?

A

no effect

39
Q

what effect does the sympathetic nervous system have on pilomotors?

A

piloerection

MD2002 (85 decks)

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