Homeostasis revision worksheet year 9 science

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Homeostasis Revision
1. Define the term homeostasis:
2. Briefly describe the components that make up the nervous system.
3. Label the picture of the brain below:
4. Complete the table below comparing the endocrine and nervous system:
Feature
Endocrine System
Speed of message
Speed of response
Duration of response
Speed of response
How does the message
travel through the body
Type of message
5. Answer the following questions about hormones:
a) How do hormones travel around the body?
Nervous System
b) Are hormones chemical messengers or electric signals?
6. Label the image of a neuron below:
E
A
B
C
D
7. Fill in the table below of a stimulus – response model:
8. What is the name of the cells that respond to different stimuli?
A Receptors
B Effectors
C Axon terminal
D Hypothalamus
9. What is the difference between the central nervous system and peripheral nervous system?
10. Have you ever seen the movie titanic? Well, it finishes with Rose floating on a
door while Jack looks on from the freezing cold water (we all know that there
was room for two on that door). Jack’s body would be continuously working
through a negative feedback loop to try to increase his body temperature (I
won’t spoil the ending for you by telling you that Jack dies… oops!). Explain the
process by which his body would have worked through to try to increase his
body temperature. Use the flow chart below to help you:
Stimulus
Receptor
Control
Centre
Negative Feedback
Effector
Response
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