Lesson 4.5.2
4.5.2 The human nervous system Quiz: AQA Combined Science, Unit 5
20 questions
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Lesson 4.5.2, The human nervous system: 20 multiple choice questions for the AQA GCSE Combined Science (8464), Unit 5: Homeostasis and response, written with Revision Ninja.
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The 20 questions
-
Which two organs make up the central nervous system?
- Brain and spinal cord
- Spinal cord and nerves
- Brain and pancreas
- Sensory and motor organs
-
In what form is information transmitted along neurones?
- Electrical impulses
- Chemical diffusion
- Sound vibrations
- Hormone signals
-
Which neurone carries impulses from receptors to the CNS?
- Motor neurone
- Sensory neurone
- Effector neurone
- Relay neurone
-
Which neurone connects the sensory and motor neurones within the CNS?
- Sensory neurone
- Relay neurone
- Motor neurone
- Effector neurone
-
Which phrase best describes reflex actions?
- Slow and conscious
- Voluntary and learned
- Automatic and rapid
- Delayed and planned
-
What does the central nervous system coordinate the response of?
- Effectors
- Sensory organs
- Stimuli
- Receptors
-
What is the correct sequence in a reflex or homeostatic response?
- Stimulus to response
- Effector to receptor
- Coordinator to stimulus
- Response to stimulus
-
Which neurone carries impulses from the CNS to an effector?
- Synapse
- Relay neurone
- Sensory neurone
- Motor neurone
-
Which neurone sequence is involved in a spinal reflex arc?
- Sensory, motor, relay
- Relay, sensory, motor
- Sensory, relay, motor
- Motor, relay, sensory
-
Why are reflex actions much faster than conscious responses?
- Shortest neurone length
- Bypasses conscious brain
- Uses chemical hormones
- Involves stronger impulses
-
A reaction time is 0.2 seconds. What is this in milliseconds?
- 2000 ms
- 20 ms
- 0.02 ms
- 200 ms
-
A student records reaction times of 0.25 s, 0.30 s and 0.35 s. What is the mean?
- 0.35 s
- 0.90 s
- 0.30 s
- 0.25 s
-
What term is used for the junction between two neurones?
- Synapse
- Axon
- Dendron
- Myelin sheath
-
Which structure acts as the effector when pulling a hand from heat?
- Relay neurone
- Pain receptor
- Muscle
- Sensory cell
-
What is the specific function of a relay neurone?
- Detects external stimuli
- Secretes hormones directly
- Connects neurones in CNS
- Contracts muscle fibres
-
Where are receptors that detect stimuli mainly located in the body?
- Muscles and glands
- Sense organs and skin
- Brain and spinal cord
- Motor and relay neurones
-
How do electrical impulses travel compared to hormones in the human nervous system?
- Along neurones
- Across bones
- Through blood
- Via lymph
-
What key feature makes reflex actions important for human survival?
- Conscious control
- Learned behaviour
- Hormonal release
- Rapid responses
-
A reaction time increases from 0.20 s to 0.26 s. What is the percentage increase?
- 30%
- 130%
- 26%
- 6%
-
Which structural feature adapts neurones for fast transmission?
- Long insulated fibres
- Large fluid-filled vacuoles
- Short branching dendrites
- Thick muscular walls
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