247032
Reflex Action
- What is a reflex?
- Why are reflexes so important?
- Explain what is meant by a reflex action?
- Automatic response
- Automatic response
- Explain why they are so important?
- 1. They help you avoid danger
- They help with basic bodily functions
- e.g. breathing, digestion
- e.g. breathing, digestion
- They help with basic bodily functions
- 1. They help you avoid danger
- How do they work?
- STIMULUS
- RECEPTOR
- Sensory neurone
- Co-ordinator
- which usually is the spinal cord or the unconscious part of brain
- Relay neuron
- Motor neuron
- EFFECTOR
- EFFECTOR
- Motor neuron
- which usually is the spinal cord or the unconscious part of brain
- Co-ordinator
- Sensory neurone
- RECEPTOR
- STIMULUS
- What 3 types of neurons are involved?
- Sensory neuron
- Motor neurone
- Relay neuron
- Relay neuron
- Motor neurone
- Sensory neuron
- What is extra special about the reflex arc?
- the impulse bypasses the conscious area of the brain
- so the time between the stimulus and reflex action is = short
- so the time between the stimulus and reflex action is = short
- the impulse bypasses the conscious area of the brain
- What is a synapse?
- Nerves are not directly joined up
- Gaps (junctions) in between them
- Gaps (junctions) in between them
- Nerves are not directly joined up
- How are messages sent through a synapse?
- electrical impulses cannot jump/ leap
- 1. impulse arrives at a neuron
- chemicals are released
- Diffuse across
- attatch to the next neuron and sends out a new impulse
- attatch to the next neuron and sends out a new impulse
- Diffuse across
- chemicals are released
- 1. impulse arrives at a neuron
- electrical impulses cannot jump/ leap
- How many neurons are
involved in the normal way
your body responds to
change?
Anexos de mídia
Quer criar seus próprios Mapas Mentais gratuitos com a GoConqr? Saiba mais.