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Neuro presentation > Peripheral nervous system > Flashcards

Peripheral nervous system Flashcards

1
Q

Function of afferent neurons?

A

Convey info from sensory receptors to CNS
First order neurons

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2
Q

What carries info from sensory receptors to CNS?

A

Afferent neurons

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3
Q

Function of efferent neurons?

A

Convey info from CNS to muscles, glands, tissues

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4
Q

What conveys info from CNS to muscles, glands, tissues?

A

Efferent neurons

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5
Q

What is nervous system split into? Draw?

A
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6
Q

What is CNS split into?

A

Brain
Spinal cord

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7
Q

What is peripheral nervous system split into?

A

Autonomic nervous system
Somatic nervous system

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8
Q

What is autonomic nervous system split into?

A

Sympathetic
Parasympathetic

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9
Q

What is para and sympathetic system part of?

A

Autonomic nervous system

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10
Q

What is peripheral system divided into?

A

Somatic
Autonomic

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11
Q

What is function somatic nervous system?

A

Voluntary action

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12
Q

What does somatic nervous system innervate?

A

Skeletal muscle
Muscle excitation

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13
Q

What is somatic nervous system made of?

A

Single neuron between CNS and skeletal muscle cell

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14
Q

Where are cell bodies of somatic nervous system located? (2)

A

Brainstem
Ventral horn spinal cord

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15
Q

Are neurons myelinated in somatic nervous system?

A

Yes

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16
Q

What neurons cause contraction muscle?

A

Motor neurons

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17
Q

What neurotransmitter is involved in somatic nervous system?

A

Acetylcholine (Ach)

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17
Q

What neurotransmitter is involved in somatic nervous system?

A

Acetylcholine (Ach)

18
Q

What is function autonomic nervous system?

A

Involuntary ns

19
Q

What does autonomic ns innervate?

A

Smooth and cardiac muscle, glands

20
Q

How many neurons in autonomic ns?

A

2 neuron chain
Between CNS and effector organ

21
Q

Where is cell body of first neuron in autonomic ns?

A

Cell body in CNS
Synapse occur outside CNS

22
Q

Is autonomic excitatory or inhibitory?

A

Both

23
Q

What two divisions of autonomic nervous system?

A

Sympathetic
Parasympathetic

24
Q

What neurotransmitters are used in autonomic ns?

A

Ach (excitatory)
Noradrenaline (inhib)

25
Q

What is sympathetic ns part of?

A

Autonomic ns

26
Q

Function of sympathetic ns?

A

Fight or flight

27
Q

Where does sympathetic ns leave CNS?

A

T1-L2

28
Q

In sympathetic ns what neurotransmitter/receptor used at preganglionic synapses?

A

Nicotinic receptor
Ach

29
Q

In sympathetic ns what neurotransmitter/receptor used at effector cell?

A

Adrenergic receptor
Noradrenaline

30
Q

Give examples of sympathetic ns function?

A

Increased heart rate
Increased force of heart contraction
Vasoconstriction
Bronchodilation
Reduces gastric motility
Sphincter contraction
Male ejaculation

31
Q

What effect does adrenal glands have on sympathetic ns?
Eg

A

Amplify
Release adrenaline- increase HR and BP

32
Q

What is parasympathetic ns part of?

A

Autonomic ns

33
Q

What is function parasympathetic ns?

A

Rest and digest

34
Q

What cranial nerves are parasympathetic?

A

1, 3, 7, 9

35
Q

What neurotransmitter used in parasympathetic ns?

A

ACh

36
Q

What receptor is present at preganglionic synapse?

A

Nicotinic receptor

37
Q

What receptor present at effector cell synapse?

A

Muscarinic receptor

38
Q

List effect parasympathetic nervous system?

A

Decreased heart rate
Decreased force of heart contraction
Vasodilation
Bronchoconstriction
Increased gastric motility
Sphincter relaxation
Male erection

39
Q

What is ns of GI tract?

A

Enteric nervous system

40
Q

What is enteric nervous system?

A

Nervous system of GI tract

41
Q

State differences between autonomic and somatic nervous sytem

A
42
Q
A
43
Q

Outline diff nervous sytems

A

Neuro presentation (24 decks)

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