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Nervous coordination
5 Class 12 Biology questions with answers and explanations.
Printable worksheet with answer key
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The resting membrane potential of a neuron is about:
- 1 +30 mV
- 2 +70 mV
- 3 -70 mV
- 4 0 mV
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An impulse jumps from node to node along a myelinated axon. This is called:
- 1 Reflex
- 2 Saltatory conduction
- 3 Osmosis
- 4 Diffusion
Show answer
Correct answer: Saltatory conduction
The impulse jumps between nodes of Ranvier.
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The gap between two neurons is the:
- 1 Dendrite
- 2 Node
- 3 Synapse
- 4 Axon
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Acetylcholine is a:
- 1 Hormone from the thyroid
- 2 Neurotransmitter
- 3 Vitamin
- 4 Enzyme
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Correct answer: Neurotransmitter
It carries signals across many synapses.
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The part of the brain that controls heart rate and breathing is the:
- 1 Pituitary
- 2 Cerebellum
- 3 Cerebrum
- 4 Medulla oblongata
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Correct answer: Medulla oblongata
The medulla controls involuntary vital functions.