Reflex Arc
- Created by: Abbi
- Created on: 04-05-13 11:12
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- Reflex Arc
- reflex action - touching something hot and moving the hand away.
- Features- fast, involentory and instinctive.
- stimulas
- Hot surface
- Receptors
- Sensory Neurone
- Relay Neurone
- Motor Neurone
- Effector
- Responce
- The thing that brings about change
- E.G Biceps, musle etc
- Message travels away from the CNS by the...
- Effector
- The CNS travels along it by the...
- Motor Neurone
- message sent alone the...
- Relay Neurone
- E.g pain/thermoreceptors in the skin
- Sensory Neurone
- Along a neurone the message is electrical
- In a synapse the message is chemical
- Things you also need to label.
- ganglion
- a group of cell bodies
- central canel
- contains CSF - ceribral spinal fluid
- dorsal root
- goes IN
- goes OUT
- goes IN
- ventral root
- goes OUT
- White matter
- Made up of mylinated axons
- Grey matter
- Made up of cell bodies, dendrites, unmylinated axons etc
- White matter
- Made up of mylinated axons
- ganglion
- Untitled
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