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Pharmacy (year one) > Intro to Nervous System > Flashcards

Intro to Nervous System Flashcards

1
Q

What are the three different nervous systems?

A

Peripheral Nervous System
Central Nervous System
Enteric Nervous System

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2
Q

What makes up the CNS?

A

Brain

Spinal Cord

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3
Q

What does the CNS do?

A

Receives and processes info and coordinates organ function

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4
Q

What are the four lobes in the brain called?

A

Frontal
Parietal
Occipital
Temporal

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5
Q

What is the frontal lobe responsible for?

A

Planning, reasoning, problem solving

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6
Q

What is the parietal lobe responsible for?

A

Movement, orientation, perception of stimuli

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7
Q

What is the occipital lobe responsible for?

A

Visual processing

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8
Q

What is the temporal lobe responsible for?

A

Perception and recognition of auditory stimuli, speech, memory

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9
Q

The peripheral nervous system sends _______ input to the CNS

A

sensory (touch, sight, sound, pain, smell)

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10
Q

What do the efferent neurones belong to?

A

Somatic nervous system

autonomic nervous system

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11
Q

The somatic nervous system contains _______ neurones which regulate the contraction of skeletal muscle

A

motor

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12
Q

Is the somatic nervous system under voluntary control?

A

Yes

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13
Q

The autonomic nervous system - neurones regulate function of internal organs, ________ glands and blood vessels

A

sweat

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14
Q

Is the autonomic nervous system under voluntary control?

A

No

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15
Q

What is the function of dendrites?

A

Receive input from other neurones via synpases

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16
Q

What is the function of the axon?

A

It is a nerve fibre - it transmits action potential to postsynaptic neurone or the effector organ

17
Q

Sensing pain has nothing to do with K+ channels. True or false?

A

False - you need functioning sodium and potassium ion channels to sense pain. Some people have a mutation in the SCN9A Na+ channel which leads to congenital insensitivity to pain - increased risk of burns

18
Q

What do nocireceptors sense?

A

Pain

19
Q

Action potentials arise from a change in the ________ potential

A

membrane

20
Q

What is the resting potential?

A

-70mV (inside)

21
Q

For every three Na+ ions moving out, how many K+ ions move in?

A

two

22
Q

At rest is the membrane polarised or depolarised?

A

Polarised

23
Q

When Na+ ions enter the neurone, the membrane is _________

A

depolarised

24
Q

When Na+ channels close, K+ remain open so K+ enters cell down a concentration gradient. True or false?

A

False - K+ exits

25
Q

When K+ channels close, adjacent Na+ channels open and action potential travels along the neurone. True or false?

A

True

26
Q

What is a synapse?

A

The junction between a neurone and a neurone or between a neurone and effector organ

27
Q

When the action potential reaches a synapse, which ion channels open?

A

Ca2+

28
Q

Neurotransmitter is released by presynaptic and postsynaptic cells. True or false?

A

False - released by presynaptic only

29
Q

Presynaptic cells release neurotransmitter into ___________ and bind to receptors in the cell membrane of postsynaptic cells

A

synaptic cleft

30
Q

Seratonin and dopamine belong to which class of neurotransmitter?

A

Amines

31
Q

Deficiency of dopamine can lead to which disease?

A

Parkinson’s disease

32
Q

Glutamate and glycine belong to which class of neurotransmitter?

A

Amino acids

33
Q

Glutamate is an inhibitory neurotransmitter, preventing action potentials. True or false?

A

False - it is excitory

34
Q

Is glycine an inhibitory or an excitory neurotransmitter?

A

Inhibitory

35
Q

GABA is an inhibitory neurotransmitter. True or false?

A

True

36
Q

Propofol and thiopental increase GABA activity. True or false?

A

True

Pharmacy (year one) (60 decks)

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