Nervous System Quiz

What is the role of neurons in the nervous system?

• They transmit information via electrical signals.

• They store nutrients.

• They produce blood cells.

• They help in digestion.

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What part of the neuron receives signals from other neurons?

• Dendrite

• Axon

• Cell body

• Nucleus

What do neurotransmitters do in the nervous system?

• They transmit signals across synapses.

• They store energy for neurons.

• They protect neurons from damage.

• They help neurons divide.

What is the role of synapses in the nervous system?

• They transfer information between neurons.

• They store memory.

• They produce heat.

• They power muscles.

How do nerve impulses transmit information in the nervous system?

• Through voltage changes when charged particles move

• By creating magnetic fields in the brain

• Via producing sound waves

• By changing the color of neurons

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What is the main purpose of axons in neurons?

• They transmit electrical signals away from the cell body.

• They store nutritional supplies.

• They hold the neuron together.

• They protect the neuron from damage.

What happens to the voltage of a neuron’s membrane during an action potential?

• It rapidly changes due to ion movement.

• It remains constant.

• It decreases to zero.

• It changes color.

How does the brain use signals to result in muscle movement?

• By sending nerve impulses that cause muscle contractions

• By storing electrical energy in muscles

• By changing the temperature of the muscles

• By making muscles lighter

How does the brain receive signals from sensory receptors?

• Through electrical impulses transmitted by neurons

• Through chemical reactions in the blood

• Through direct physical contact with the receptors

• Through body heat

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What happens to sensory information once it reaches the brain?

• The brain processes and interprets the information.

• The information is stored directly in the muscles.

• The brain discards the information.

• The information is sent to the heart.

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