A neurotransmitter released into the synaptic cleft is eliminated by… A- Diffusi

ID: 3509374 • Letter: A

Question

A neurotransmitter released into the synaptic cleft is eliminated by…

A- Diffusion

B- Re-uptake into neuroglia cells

C- Degradation inside the neuron

D- All of the above

E- None of the above

Which of the following channels will be activated in response to a neurotransmitter?

A- Leakage channels

B- Ligand-gated channels

C- Mechanically-gated channels

D- Voltage-gated channels

E- None of the above

The left side of the cerebrum controls skeletal muscles on the right side of the body because motor neurons cross from left to right in the:

precentral gyrus.

cerebellum.

medulla oblongata.

hypothalamus.

thalamus

Which of the following statements is CORRECT regarding dendrites?

They are processes extending from the axon

They can produce postsynaptic potentials

They pass chemical information to another neuron by forming synapses

They contain vesicles with neurotransmitters

Which of the following structures in the neuron is where the action potentials start?

Axon collaterals

Axon terminals

Axon hillock

Initial segment

None of the above

D. Neurotransmitter may diffuse away from the synaptic cleft, be taken up by the presynaptic neuron, or be enzymatically degraded.

B. Ligand-gated channels will be activated in response to a neurotransmitter.

Motor nerves crossover in the medulla oblangata.

Neurotransmitters pass chemical information to another neuron by forming synapses.

Action potential starts at axon hillock.

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