Nervous System

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  • Created by: MaxR1
  • Created on: 05-05-18 17:17
Give 3 examples of internal conditions that need to be controlled
Water content of the body, Ion (salts) content of the body, Blood Sugar levels, body temperature
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What are the 3 stages of a control system?
*Insert Image*
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Describe how the nervous system works
Receptors detect a stimulus and send impulses along sensory neurons to the CNS. The CNS coordinates the information and sends impulses along motor neurons to the effectors, which bring about a response.
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What is an effector?
An effector is any part of the body that produces a response to a stimulus. A muscle or gland.
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How do synapses work?
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What is a reflex action?
Reflex actions are rapid and happen without us thinking. For example, you would pull your hand away from a hot flame without thinking about it.
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How does the reflex arc work?
stimulus → receptor → sensory neurone → relay neurone → motor neurone → effector
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How do the radial and circular muscles in the iris control pupil size in high and low light intensity
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Eye Diagram
*insert diagram*
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How do the ciliary muscles, suspensory ligaments and lens allow us to see near and far objects
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Motor neurone diagram
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Sensory neurone diagram
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Where in the brain is the cerebral cortex and what does it control
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Where in the brain is the cerebellum and what does it control
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Where in the brain is the medulla and what does it control
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Where in the brain is the hypothalamus and what does it control
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Where in the brain is the pituitary gland and what does it control
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Other cards in this set

Card 2

Front

What are the 3 stages of a control system?

Back

*Insert Image*

Card 3

Front

Describe how the nervous system works

Back

Preview of the front of card 3

Card 4

Front

What is an effector?

Back

Preview of the front of card 4

Card 5

Front

How do synapses work?

Back

Preview of the front of card 5
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