topic 6 nervous co ordination Flashcards

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1
Q

how does the nervous system communicate?

A

by nerve impulses

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2
Q

how does the hormonal system communicate?

A

by hormones

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3
Q

how does transmission occur in the nervous system?

A

by neurons

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4
Q

how does transmission occur in the hormonal system?

A

by the blood system

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5
Q

what speed is transmission in the nervous system?

A

rapid

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6
Q

what speed is transmission in the hormonal system?

A

slow

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7
Q

where are impulses sent from the nervous system?

A

to specific parts of the body

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8
Q

where are impulses sent from the hormonal system?

A

to all parts of the body, only target cells respond

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9
Q

how far spread is the nervous system response?

A

localised

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10
Q

how far spread is the hormonal system response?

A

widespread

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11
Q

how fast is the response of the nervous system?

A

rapid

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12
Q

how fast is the response of the hormonal system?

A

slow

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13
Q

how long does the response of the nervous system last?

A

short lived

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14
Q

how long does the response of the hormonal system last?

A

long lasting

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15
Q

what type of effect does the nervous system have?

A

temporary and reversible

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16
Q

what type of effect does the hormonal system have?

A

permanent and irreversible

17
Q

what are neurons?

A

specialised cells carrying nerve impulses

18
Q

what does the cell body do?

A

contains the nucleus and organelles

19
Q

what do the dendrites do?

A

carry nerve impulses towards the cell body

20
Q

what does the axon do?

A

carries nerve impulses away from the cell body

21
Q

what do the Schwann cells do?

A

surround the axon- protect and provide electrical insulation

22
Q

what does the myelin sheath do?

A

forms a covering around the axon

23
Q

what are the Nodes of Ranvier?

A

connections between Schwann cells with no myelin sheath

24
Q

what is the job of a sensory neuron?

A

transmits nerve impulses from the receptor to a relay or motor neuron

25
Q

what is the structure of a sensory neuron?

A

long dendrites

short axons

26
Q

what is the job of a motor neuron?

A

transmits nerve impulses to an effector

27
Q

what is the structure of a motor neuron?

A

short dendrites

long axons

28
Q

what is the job of a relay neuron?

A

transmits nerve impulses between neurons

29
Q

what is the structure of a relay neuron?

A

short dendrites

short axons