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WorksheetsNeurons and reflex arcs
Total questions: 18
Worksheet time: 12mins
What is a nerve impulse?
Your body's reaction to a certain event.
An electric signal that passes through neurons.
A message passed through the blood.
Electrical signal created in the brain.
How many types of neurons are there?
5
6
3
4
This is a (a) neuron.
This is a (a) neuron.
This is a (a) neuron
What is the arrow pointing to?
Axon
Dendrite
Axon terminal
Synapse
What is the arrow pointing to?
Axon terminal
Cell body
Nucleus
Dendrites
Can neurons come in contact with each other? Why?
Yes, because there is nothing restricting them to do so.
Yes, because it is crucial to pass nerve impulses between each other.
No, because the synapse prevents it from doing so.
No, because if they touch each other they will spontaneously combust.
What is the purpose of synapses (as shown in the flashcards)?
To stop two neurons from touching each other.
To allow two neurons to interact with each other
To ensure nerve impulses travel in one direction.
To stop neurons from communicating with each other
What do the vesicles release that send nerve impulses from one neuron to another?
Nerve impulse
Electrotransmitters
Neurotransmitters
Deoxyribonucleic acid
What do you call a type of action that we are aware is happening?
(a)
What do you call a type of action that is completed without us noticing?
(a)
Select the reflex actions:
Knee jerk when struck
Digesting food
Pupil changing in size under different lighting conditions
Swallowing
What is the main difference between voluntary/involuntary actions and reflex actions?
Reflex actions don't use the brain.
Reflex actions use the brain and spinal cord whilst voluntary/involuntary actions don't.
V/IV actions happen way faster than reflex actions.
V/IV actions are for feelings, reflex actions are for touch/smell/taste/sight.
Usually, how fast is a reflex action?
10 ms
0.1 s
0.1 ms
50 s
Which of these isn't an example of a stimulus?
A hot surface
The skin
A bright light
Something getting in the eye
Name an effector (just the type, no specifics e.g leaf instead of maple leaf)
(a)
Tick all examples of receptors:
Skin
Ear
Tongue
Muscle
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