Neurons and Glial Cells Quiz

What is the primary function of neurons?

• Structure support

• Transmit information

• Insulation

• Waste transport

Which of the following is NOT a function of glial cells?

• Structure

• Insulation

• Transmit information

• Waste transport

What is the role of sensory neurons in a reflex arc?

• Transmit signals from the brain to muscles

• Transmit signals from muscles to the brain

• Transmit signals from sensory receptors to the spinal cord

• Transmit signals from the spinal cord to sensory receptors

Which part of the reflex arc is responsible for processing the signal?

• Sensory neurons

• Motor neurons

• Interneurons

• Skin receptors

What is the function of motor neurons in a reflex arc?

• Transmit signals from the brain to the spinal cord

• Transmit signals from the spinal cord to muscles

• Transmit signals from muscles to the spinal cord

• Transmit signals from sensory receptors to the brain

What is the typical voltage of a neuron at rest?

• -70 mV

• 0 mV

• +40 mV

• -55 mV

What is the minimum intensity needed to fire a stimulus called?

• Threshold

• Peak

• Baseline

• Limit

What is an action potential?

• A type of chemical reaction in the brain

• A neural impulse

• A form of muscle contraction

• A type of sensory input

What does an action potential do?

• It creates a chemical bond

• It travels down the axon

• It stores energy in the cell

• It breaks down neurotransmitters

What is depolarization in the context of a cell's membrane potential?

• Movement of a cell's membrane potential to a more positive value

• Movement of a cell's membrane potential to a more negative value

• Stabilization of a cell's membrane potential

• Complete loss of membrane potential