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Biology > Coordination and Response > Flashcards

Coordination and Response Flashcards

1
Q

Describe the route of the nervous pathway

A

Stimulus–>Receptor–>Sensory neurone–>CNS->Motor Neurone–>Effector–>Response

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2
Q

What are the parts of the Central Nervous System

A
  • ->Brain

- ->Spinal Cord

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3
Q

What is required for a coordinated response?

A
  • ->Stimulus
  • ->Receptor
  • ->Effector
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4
Q

What is homeostasis?

A
  • -> The maintenance

- ->of const. int. enviro.

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5
Q

Give examples of homeostasis

A
  • ->cont. blood gluc. conc.
  • ->cont. body temp.
  • ->water lev. in the blood
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6
Q

What is a stimulus?

A
  • ->a change in the enviro.

- ->that can be DETECTED

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7
Q

What is skin sensitive to?

A
  • ->Pressure
  • ->Heat and Cold
  • ->Pain
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8
Q

What is the tongue sensitive to?

A
  • ->Chemicals

- ->in F and B

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9
Q

What is the nose sensitive to?

A
  • ->Chemicals

- ->in AIR

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10
Q

What is the ear sensitive to?

A
  • ->Sound

- ->Movement

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11
Q

What is the eye sensitive to?

A

–>Light

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12
Q

What is a nerve?

A
  • -> A bundle of

- ->Neurones (nerve cells)

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13
Q

What are the 3 types of neurones?

A
  • ->Sensory
  • ->Relay
  • ->Motor
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14
Q

What is the role of sensory neurones?

A
  • -> to carry impulses
  • ->From recep.
  • ->towards CNS
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15
Q

What is the role of relay neurones?

A
  • ->connect the
  • ->Sensory neurone
  • ->To the mot. neurone
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16
Q

Describe the General Structure of a Motor neurone

A
  • ->cell body
  • ->Dendrons
  • ->Axon
  • ->Myelin Sheeth
17
Q

What is the function of the cell body?

A

–>houses the nuc.

18
Q

What is the function of the axon?

A
  • -> Long fibre
  • -> carries imp.
  • ->to effect. organ
19
Q

Describe the reflex action

A
  • ->A stimulus is detec. by PAIN RECEP. in skin
  • ->Sens. Neurone sends elect. imp. to SC
  • ->Elect. imp passed onto the RELAY neurone in SC
  • ->RN connects MN
  • ->MN carries imp/
  • ->Impulse reach. effect.
  • ->App. resp.
20
Q

What are the differences between the nervous system and endocrine system

A

Elect. imp vs chem. hormone
Instant resp.vs much slower resp.
Impulse acts on small areas vs. horm. widespread effects
Short eff.(til nerv imp. stop) vs Long. effect( till horm. brok.

21
Q

Describe the reflex arc

A
  • ->Receptor
  • ->Sensory Neurone
  • ->Relay neurone
  • ->Motor neurone
  • ->Effector
22
Q

What are receptors?

A

–>Sense organs that det. stimuli

Biology (12 decks)

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