Transmission of Nerve Impulses

Which of the following does not affect the transmission speed of a neuron cell?

• the diameter of the nerve fiber

• the presence of myelin in the nerve cell

• temperature

• the strength of the stimulus

Which of the following gate opens during depolarization

• Na⁺ gates

• K⁺ gates

• Na⁺/K⁺ pump

• H⁺ pump

Which of the following gate opens during repolarization

• Na⁺ gates and Na⁺/K⁺ pump

• K⁺ gates and Na⁺/K⁺ pump

• Na ⁺ and K⁺ gates

• Na⁺ gates only

What is the general name for the chemicals in the nervous system that allow messages to be passed across the synapse?

• Amino Acid

• Enzyme

• Hormone

• Neurotransmitter

What is the chemical used by a neuron to transmit an impulse across a synapse to another nerve cell?

• Neurotransmitters

• Synapse

• Threshold

• Impulse

Which way does an impulse travel

• From dendrite to axon and out axon terminal

• From axon to axon and out dendrite terminal

• From axon to dendrite and out axon terminal

• From cell body to dendrite and out axon terminal

Which nerve transmits information from the eye to the brain?

• Optic

• Olfactory

• Occulomotor

• Trigeminal

Transmit impulses to third-order sensory neurons

• First-Order Sensory Neurons

• Second-Order Sensory Neurons

• Third-Order Sensory Neurons

During depolarization outside of the cell is ......... charged and inside of the cell is............ charged

• negatively / positively

• positively / negatively

• positively/ positively

• negatively/ negatively

Which of the following can be observed during the 2^nd period of the graph?

• K+ gates open

• Na+ gates open

• Na+/K+ pump opens