The Nervous System
- Created by: joshbryan2000
- Created on: 13-03-18 19:19
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- The Nervous System
- Organisms need to respond to stimuli in order to survive.
- Cells in multicellular organisms need to communicate with each other first . So they developed nervous and hormonal communication systems
- Is made up of different parts:
- The CNS (Central Nervous System)
- Consists of the brain, spinal cord, sensory neurones and motor neurones.
- Sensory Neurons
- Neurones that carry information as electrical impulses from the receptors to the CNS
- Motor Neurons
- Carry electrical impulses from the CNS to effectors
- Effectors
- All your muscles and glands which respond to nervous impulses
- Muscles contract and glands secrete hormones
- All your muscles and glands which respond to nervous impulses
- The CNS (Central Nervous System)
- Receptors are the cells that detect stimuli
- There are many different types of receptors e.g. taste and sound
- They respond to nervous impulses
- The CNS coordinates a response
- It receives information about the receptors and then coordinates a response
- Stimulus
- Receptor
- Sensory Neurone
- CNS
- Motor Neurone
- Effector
- Response
- Effector
- Motor Neurone
- CNS
- Sensory Neurone
- Receptor
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