Nerve Impulse Transmission

Nerve impulse transmission refers to the ability of the neuron to...

• reproduce

• receive an chemical signal

• produce sodium or potassium

• send an electrochemical signal

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

• Na+ and K+ gates open

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

What is the gap between the axon terminal of one neuron and the dendrite of the next neuron called?

• Synapse

• Node of Ranvier

• Joint

• Neuromuscular Junction

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

Once action potential occurs at one spot on the neuron's membrane it...

• causes the immediate release of neurotransmitters

• stops action potential at the adjacent spots

• causes depolarization in adjacent membrane

• causes repolarization in the adjacent membrane

When the action potential impulse is traveling down the axon and it "jumps over" the myleninated sections of the axon to make the impulse move faster, this is known as -

• impulse momentum

• electric current

• saltatory conduction

• nodes of Ranvier

What is saltatory conduction?

• when the threshold potential is reached

• when the action potential jumps from node to node

• when the neurone becomes hyperpolarised

Identify Z

• Dendrite

• Axon Terminal

• Neurotransmitters

• Synapse

X

• Axon Terminal Button

• Neurotransmitters

• Synapse

• Synaptic cleft