Biology 1a - Human Biology

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1. What does the nervous system do?
The nervous system allows the body to respond appropriately to the environment.
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2. What is a stimulas?
a change in the environment ehich you may need to react to.
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3. What are the five different sense organs?
eyes , ears, nose , tongue and skin
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4. What do these sense organs contain?
Receptors
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5.What are receptors?
a group of cells which are sensitive to a stimulas
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6. What do receptors do?
Change stimulas energy into electrical impulses
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7. Which receptors are in the eyes?
light
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8. Where are the sound receptors?
In the ears
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9. Which receptors are in the nose?
Smell
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10. where are the taste receptors?
in the tongue
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11. What are sensory neurones?
The nerve cells that carry signals as electrical impulses from the receptors in the sense organs to the central nervous system.
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12. Which neurones cary signals from sensory neurones to motor neurones?
Relay Neurones
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13. What are motor neurones?
The nerve cells that carry signals from the central nervous system to the effectors..
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14. What are effectors?
Muscles and glands
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15. What is the central nervous system consisted of?
The brain and spinal cord.
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16. What is a synapse?
The connection between 2 neurones
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17. What is the nerve signal tranferred by?
Neurotransmitters
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18. What happens between stimulas and response? (flow)
STIMULAS - RECEPTOR - SENSORY NEURONE - RELAY NEURONE - MOTOR NEURONE - EFFECTOR - RESPONSE
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19. What is a reflex?
Reflexes are automatic responses to certain stimuli.`
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20. What is the passage of information in a reflex (receptor to effector) called?
A reflex arc
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21. What does the brain do?
The brain coordinates a response
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Card 2

Front

2. What is a stimulas?

Back

a change in the environment ehich you may need to react to.

Card 3

Front

3. What are the five different sense organs?

Back

Preview of the front of card 3

Card 4

Front

4. What do these sense organs contain?

Back

Preview of the front of card 4

Card 5

Front

5.What are receptors?

Back

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