Reflex actions (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What two parts make up the central nervous system (CNS)?
What two parts make up the central nervous system (CNS)?
Brain and spinal cord
What are effectors?
What are effectors?
Muscles or glands that respond
Which three features describe reflex actions?
Which three features describe reflex actions?
Automatic, rapid, innate
What does 'innate' mean when describing reflexes?
What does 'innate' mean when describing reflexes?
You're born with them
What is the correct order of the reflex arc pathway?
What is the correct order of the reflex arc pathway?
Receptor→Sensory→Relay→Motor→Effector
What do sensory neurones do in a reflex arc?
What do sensory neurones do in a reflex arc?
Carry signals to the spinal cord
Where are relay neurones located?
Where are relay neurones located?
In the spinal cord
What is a synapse?
What is a synapse?
A tiny gap where neurones meet
What are neurotransmitters?
What are neurotransmitters?
Chemical messengers at synapses
Which direction can signals travel across a synapse?
Which direction can signals travel across a synapse?
One direction only
How fast is signal transmission at synapses compared to normal nerve impulses?
How fast is signal transmission at synapses compared to normal nerve impulses?
Slower
Why are reflexes crucial for survival?
Why are reflexes crucial for survival?
Respond to danger before thinking