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Nervous System
- Why do you need a nervous
system?
- What is a receptor?
- What is a receptor?
- What is the job of the
nervous system?
- Body is sensitive to changes
- Takes information from sorrounding and helps you react in the correct way
- Avoid danger, find food and a mate
- Avoid danger, find food and a mate
- Takes information from sorrounding and helps you react in the correct way
- Body is sensitive to changes
- How?
- Sends electrical signals (impulses)
- travel very
fast
(1-120m/s)
- travel very
fast
(1-120m/s)
- Sends electrical signals (impulses)
- What are the stages?
- Stimuli
- detects changes in the world around you
- change is picked up by
- Receptor
- Cells
- Where are you going to find them?
- Name the 5
sense?
- Name the 5
sense?
- Where are you going to find them?
- Neurons
- Special
cells
(animal
cells)
- Found in bundles of 100s and 1000s
- send impulses from
the _____ to the
____
- send impulses from
the _____ to the
____
- Found in bundles of 100s and 1000s
- Co-ordinator (CNS)
- Made up of the brain and spinal cord
- Huge amount of info received and brain co-ordinates it
- Huge amount of info received and brain co-ordinates it
- Motor neurone
- sends info to make the right bits of body move
- Effector organ
- Name them?
- Name them?
- sends info to make the right bits of body move
- Made up of the brain and spinal cord
- Special
cells
(animal
cells)
- Cells
- detects changes in the world around you
- Stimuli
- What are receptor cells?
- pick up changes in the stimuli
- Where will you find them?
- Where will you find them?
- pick up changes in the stimuli
- What are neurons?
- Cells that send impulses from the receptor to the CNS
- Cells that send impulses from the receptor to the CNS
- Name the co-ordinator here?
- CNS
- Which is made up of the brain and spinal cord
- Which is made up of the brain and spinal cord
- CNS
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