What type of signaling occurs during the patellar tendon reflex?

• Chemical only

• Electrical only

• Electrochemical

• Mechanical

What is the role of sensory neurons during the knee-jerk reflex?

• They contract the muscles directly.

• They send electrical signals to the spinal cord.

• They inhibit motor neurons.

• They release neurotransmitters.

What happens when the action potential reaches the axon terminals during the knee-jerk reflex?

• Muscles contract immediately.

• A neurotransmitter is released.

• The brain is directly stimulated.

• The reflex is inhibited.

What is the nature of the signal that travels within a neuron?

• Chemical compounds

• Ions

• Proteins

• Lipids

Where does signaling within a neuron usually travel from and to?

• From the axon terminals to the dendrites

• From the axon hillock to the cell body

• From the dendrites to the axon hillock

• From the cell body to the dendrites

After reaching the axon hillock, where does the signal travel next?

• To the dendrites

• To the cell body

• Down the axon to the axon terminals

• To the nucleus

What is a membrane potential?

• The difference in electrical charge across a cell membrane

• The amount of energy a cell can produce

• The temperature difference inside and outside a cell

• The pressure difference across a cell membrane

Tags

NGSS.HS-LS1-3

When measured with a microelectrode, how does the inside of the cell compare to the outside?

• More positive

• More negative

• The same

• More neutral

What is the typical range for a resting membrane potential (RMP)?

• -10 to -20 mV

• -30 to -40 mV

• -60 to -70 mV

• -80 to -90 mV

What factors contribute to a neuron's ability to generate and maintain a resting membrane potential?

• The size of the neuron and the speed of signal transmission

• The structure of a cell membrane and the separation of different ions across it

• The temperature and pressure inside the neuron

• The amount of neurotransmitters present