Standard 3.1b Formative Quiz

Which of the following are types of nervous tissue?

• neuron

• neuropathy

• neuroglia

• neurocoels

Tags

Standard 3.1 Beginning

Use the terms below to label the parts of a neuron.

a

b

c

d

e

f

axon terminal

axon

cell body

myelin

dendrite

node of Ranvier

Tags

Standard 3.1 Approaching

Match the following structures to their function

• insulates the electrical signal

• myelin sheath

• chemical messengers that carry the signal across the synapse to the receiving neuron

• axon

• sends the signal away from the cell body

• cell body

• does the work of the cell (contains organelles)

• neurotransmitters

• receives the signal and brings the impulse toward the cell body

• dendrites

Tags

Standard 3.1 Approaching

The tiny gap between the sending and receiving neuron. Neurotransmitters carry the message across the space.

• dendrite

• synapse

• axon terminal

• impulse

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Standard 3.1 Approaching

True/False: A nerve impulse is an all-or-none response. Either the threshold is met and the impulse proceeds through the whole neuron, or it never starts at all.

• False

• True

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Standard 3.1 Meeting

Put the following in order to describe nerve cell communication

• Neurotransmitters from the sending neuron bind to a receptor on the dendrite of the receiving neuron, continuing the message.

• When the impulse reaches the axon terminals, it triggers the release of neurotransmitters.

• Neurotransmitters diffuse across the synapse.

• Sending neuron receives stimulus through its dendrites.

• Electrical impulse travels through the cell body and down the entire length of the axon.

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Standard 3.1 Meeting

Put the following in the correct order to describe the action potential of a neuron

• Voltage-gated ion channels are opened and Na+ ions enter the cell.

• Impulse arrives and threshold is met.

• Voltage-gated K+ channels are still open; Na+ channels are in a resting state.

• Na+/K+ pump restores the levels of voltage in the neuron.

• Voltage-gated ion channels are opened and K+ ions leave the cell; Na+ channels begin to reset.

Tags

Standard 3.1 Exceeding