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Science for Medicine A > Autonomic Physiology > Flashcards

Autonomic Physiology Flashcards

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1
Q

Pre ganglionic

A

small and myelinated (white ramus)

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2
Q

Post ganglionic

A

unmyelinated (gret ramus)

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3
Q

Autonomic is___

A

Metabotropic

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4
Q

Parasympathetic nerves

A

Cranial nerves- III VI IX X

Sacral S1-S5

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5
Q

Sympathetic

A

Thoracic T1-12

Lumbar L1-L5

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6
Q

Long pre-ganglionic and short post-ganglionic

A

Parasympathetic

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7
Q

Short pre-ganglioni and long post-ganglionic

A

Sympathetic

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8
Q

Divergence

A

Pre-ganglionic fibre branch out to different post-ganglioni fibres and different levels of the chain

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9
Q

Convergence

A

Post-ganglionic fibre can receive signals from many pre-ganiglionic

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10
Q

Mass activation

A

all postganglionic sympathetic neuurons can be activated simultaneously (fight or flight)

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11
Q

Eye- sympathetic

A

a1 receptors on radial muscle: radial muscle contracts and pupil dilates
B2 receptors on cilary muscle: relaxes to focus on far away

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12
Q

Eye- parasympathetic

A

Muscarinic receptors on sphincter muscle-sphinceter muscle contracts
Muscarinic receptors on cilary- contracts to focus close up

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13
Q

Heart- sympathetic

A

B1 receptors on pacemaker- increase heart rate

B1 receptors on myocetes- increase strength of contraction

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14
Q

Heart- parasympathetic

A

Muscarinic receptors on pacemaker- slow down heart rate

Little effect on strength of contraction

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15
Q

Lungs- sympathetic

A

B2 on smooth muscle airways- lungs relax and dilate

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16
Q

Lungs- parasympathetic

A

Muscarinic receptors smooth muscle contract and constrict airways

17
Q

Blood vessels- sympatetic

A

a1- smooth muscle contracts and blood flow decreases

B2- smooth muscle relaxes and blood flows faster

18
Q

The gut- sympathetic

A

a/B smooth muscle- gut motility reduced

a receptors pancreas- inhibit enzyme secretion

19
Q

The gut- parasympathetic

A

muscarinic- contraction of smooth muscle in gut ( increases gut motility)
Muscarinic- pancreas- activates enzyme secretion

20
Q

Energy stores- sympathetic

A

a/B on liver cells- glygogenolysis and gluconeogenesis

a/B on adipocytes- increases lipolysis

21
Q

Salivary gland- sympathetic

A

beta receptors-thick secretion of enzymes (mouth dry)

22
Q

Salivary gland- parasympathetic

A

muscarinic receptors- watery secretions

23
Q

Bladder- sympathetic

A

B2 bladder wall relaxes

a1- smooth muscle sphincter- constricts

24
Q

Bladder- parasympathetic

A

muscarinic- bladder wall- contracts

Muscarinic- sphincter relaxes

25
Q

Reproduction- sympathetic

A

a1- smooth muscle of urethra- causes ejaculation

26
Q

Reproduction- parasympathetic

A

muscarinic- corps cavernosum- relaxes smooth muscle causes erection

Science for Medicine A (31 decks)

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