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Nervous System and Reflex Actions Flashcards | StudBud

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Nervous System and Reflex Actions

7 terms·StudBud Administration·33 plays

KS3/GCSE #biology #Nervoussystem basics and outline of #reflexaction pathway and #synapses

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Questions 7

Answers

1
A receptor is...
...a change in the environment.
...causes a response to a stimulus.
...made up of lots of cells.
...a special type of cell that detects a stimulus.
2
Which of the following is an effector organ?
Brain
Muscle
Eye
Gland
3
A synapse is...
...a chemical messenger.
...where the receptor meets the neurone.
...where the neurone meets the effector.
...a gap between two neurones.
4
Electrical impulses reach the central nervous system. Which of these organs make up the CNS?
Eyes, nose, tongue and skin.
Brain and heart
Spinal cord
Brain and Spinal cord
5
What neurone carries the electrical impulse from the receptor to the CNS?
Motor neurone
Receptor neurone
Relay neurone
Sensory neurone
6
How do impulse 'jump' between neurones?
Chemicals cause the synapse to close, joining both neurones
Electrical signal is attracted to the other neurone
Chemicals are released and diffuse across the synapse
Electrical signal moves along tiny fibres across the synapse
7
The skin is known as a sense organ. Which of these stimuli does it NOT respond to?
Pain
Odour
Pressure
Temperature