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Nas > L15: Autonomic Nervous System Function > Flashcards

L15: Autonomic Nervous System Function Flashcards

(55 cards)

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1
Q

Where are sensory receptors of the autonomic NS found

A

On the viscera

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2
Q

What are the effectors of the autonomic system

A

Smooth muscle
Secretory glands
Cardiac muscle

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3
Q

What are the effector of the somatic NS

A

Skeletal muscle

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4
Q

What are the 3 categories of the autonomic Nervous system

A

Sympathetic
Parasympathetic
Enteric

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5
Q

What is the main role of the sympathetic NS

A

Flight or fight response

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6
Q

What is the main role of the parasympathetic NS

A

Rest and digest

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7
Q

How does the sympathetic and parasympathetic work together

A

Dual innervation

Antagonist

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8
Q

What is the 2 neurone chain of the autonomic NS composed of

A

Pre-ganglionic neurone

Post-ganglionic neurone

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9
Q

Where does somatic motor neurone release its neurotranmitters

A

At the neuromuscular junction : point at which the motor neurone and skeletal muscle meet

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10
Q

Where does autonomic efferent neurone release neurotranmitters

A

At the end of the axon swellings for broadcasting

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11
Q

What is the main neurotranmitter of the somatic NS

A

Acetylcholine

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12
Q

What is the main neurotransmitter of the parasympathetic ns

A

Pre ganglion: acetycholine

Post ganglion: acetycholine

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13
Q

What is the neurotransmitter for the sympathetic NS

A

Pre ganglion: ach

Post ganglion: noradrenaline or adrenaline

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14
Q

What receptors does ach from the parasympathetic pre ganglion act on

A

Nicotinic receptor

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15
Q

What receptor does ach from the parasympathetic post ganglionic neurone act on

A

Muscarinic receptor

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16
Q

What receptor does ach from the sympathetic pre ganglionic neurone act on

A

Nicotinic receptor

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17
Q

What receptor does noradrenaline from the sympathetic post ganglion act on

A

Alpha adrenoceptors

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18
Q

What receptor does adrenaline from the sympathetic post ganglionic neurone act on

A

Beta adrenoceptors

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19
Q

What are sweat glands only innervated by

A

Sympathetic nervous system

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20
Q

If the sweat glands are innervated by the sympathetic ns are the neurotransmitters ach and then NA/A

A

No

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21
Q

What are the neurotransmitter release of the sweat glands

A

Ach for both pre and post ganglionic neurones

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22
Q

Why are sweat glands not classified as parasympathetic

A

Because the embryonic origin is from the sympathetic source

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23
Q

What type of a gland is the adrenal gland

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A

Neuroendocrine gland

24
Q

What are the 2 main layers of the adrenal gland

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A

Adrenal cortex

Adrenal medulla

25
What does the adrenal medulla produce
Adrenaline and nor adrenaline
26
What can the adrenal medulla be classed as then
Post ganglions
27
Give 2 examples where the SNS/PNS have dual innervation but are antagonistic
Heart | GI tract
28
What is the activity of the SNS and PNS at the heart
SNS: increase heart rate PNS: decrease heart rate
29
What is the activity of the SNS/PNS at the GI tract
SNS: decrease motility PNS: increase motility
30
If the SNS and PNS have dual innervation and are antagonist what determines the overall action of the effector
The balance of the the NS determines if SNS or PNS is in charge
31
Give an example where the SNS/PNS have dual innervation and are antagonist but act on different muscles
Pupil
32
Which muscle does the SNS act on in the pupil
Radial muscle
33
What muscle does the pns act on in the pupil
Circular muscle
34
Give an synonym to remember the muscle of the pupil
Respectful Soybeans Control Pills
35
What does the innervation of the SNS to the pupil do
Dilate the pupil
36
What does the innervation of the PNS to the pupil do
Constrict the pupil
37
Give an example where there is dual innervation but doesn’t work antagonisticly
Exocrine glands e.g salivary glands
38
Give an example where you only get single innervation
Most but not all Blood vessels
39
What is most of the blood vessels innervation by
SNS
40
What does increased activity of SNS in most of the blood vessels lead to
Vasoconstriction
41
What does decreased activity of SNS in most blood vessels lead to
Vasodilation
42
Which blood vessels in the body have dual innervation
Blood vessels in the head and neck
43
What does SNS in the head and neck blood vessels cause
Vasoconstriction
44
What does the PNS in the head and neck blood vessels cause
Vasodilation
45
What gland does the head and neck blood vessel act on
Salivary gland
46
What does the SNS lead to in the salivary gland
Thick and sticky saliva
47
What does the PNS in the head and neck blood vessels lead to in the salivary gland
Large Volume and watery saliva
48
Reminder: give an example where there is dual innervation but not is not antagonist
Salivary glands
49
How does the SNS and PNS work in male sex organs
Pns=Point | SNS=shoot
50
Can the somatic and autonomic system work together
Yes
51
Give 2 examples where the somatic and autonomic ns work together
1) focusing the eye on a near object | 2) respond to cold
52
How is the somatic ns involved in focusing the eye on a far object
Eye movements
53
How is the autonomic ns involved in focusing the eye on far objects
Pupil adjustment
54
How is the somatic ns involved in responding to cold
Shivering i/e moving skeletal muscle
55
How is the autonomic ns involved in responding to the cold
Vasoconstriction in the skin

Nas (23 decks)

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