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paramedic training > Nervous System > Flashcards

Nervous System Flashcards

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1
Q

what are the functions of the nervous system?

A
  1. to recieve and analyse impulses
  2. to convey them from the brain
  3. to integrate them to maintain homeostasis
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2
Q

how does the nervous system work?

A

sensory receptor
integration in brain and spinal chord
motor output -> effector

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3
Q

what are the two systems that make the nervous system?

A
  1. central nervous

2. peripheral nervous system

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4
Q

what are the two parts of the central nervous system?

A

brain

spinal chord

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5
Q

approximately how much oxygen does the brain need

A

20%

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6
Q

what do the meninges do?

A

surround brain + spinal chord

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7
Q

what are the 3 parts of the brain?

A

Cerebrum
Cerebellum
Brain stem

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8
Q

what is a neurone?

A

a cell that transmits nerve impulses

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9
Q

what is a nerve?

A

collection of neurones

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10
Q

what do neuroglia do?

A

support+ protect neurones
replicate
don’t conduct

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11
Q

what is the name of the nerve running down the leg?

A

Sciatic

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12
Q

what is multiple sclerosis?

A

disease affecting the brain and spinal chord where immune system attacks the cells causing numbness, loss of muscle control, vision, balance

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13
Q

what is the myelin sheathe?

A

an insulating sheathe that wraps round the axon helping to speed up the transmition of signals

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14
Q

what is the white matter in the brain?

A

the connection wires

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15
Q

what is the grey matter in the brain

A

the thinking part

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16
Q

what is the cerebrum?

A

left and right brain

17
Q

what does the left brain do?

A

analytic thought
logic
language
science and maths

18
Q

what does the right brain do?

A

holistic thoughts
creativity
intuition
arts/ music

19
Q

whats the function of the frontal brain and where is it?

A

motor

front

20
Q

what is the periteal brain

A

sensory part

centre brain

21
Q

what is the occipital brain and where is it?

A

back of brain

controls vision

22
Q

what is the temporal brain and where is it?

A

hearing

sides

23
Q

whats the foramen magnum?

A

hole in base of skull

24
Q

wheres the Cerebellum and what does it do?

A

bottom rear brain

controls balance, muscle coordination, muscle tone and posture

25
Q

what is the mid brain and what are its functions?

A

brain stem connecting brain and spinal chord

coordinates eyes/pupils and the movement of head

26
Q

How long is the spinal chord?

A

42-45cm

27
Q

How many cranial nerves are there in total?

A

24

28
Q

How much does a typical brain weigh?

A

3lb

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