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Exam 4: The Nervous System

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Question 1

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Neurotransmitter molecules are released into the small space between two neurons called the

A) transporter.
B) synapse.
C) partition.
D) vesicle.

E) All of the above
F) A) and B)

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Question 2

Multiple Choice

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Drugs can affect neurotransmitter systems in two main ways: either by altering the availability of the neurotransmitter in the synapse,or by

A) acting on the blood-brain barrier.
B) altering hormone levels.
C) acting directly on the receptors.
D) increasing blood pressure.

E) A) and D)
F) A) and C)

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Question 3

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Gated ion channels for sodium and potassium open and close in rapid succession,causing the neuron to depolarize and then return to its normal resting level,during each

The complex branching parts of a neuron that receive information from other neurons are called dendrites.

Parkinson's disease patients are often treated with dopamine because L-dopa cannot cross the blood-brain barrier.

GABA and glutamate are similar in that they are found throughout the brain and are primarily inhibitory neurotransmitters.

Suppose you wanted to prescribe a hypothetical drug that would have an overall excitatory effect on the nervous system.Which would you choose?

______________ results from a loss of myelin wrappings.

The ______________ is an important link between the brain and the pituitary gland,and is involved in feeding,drinking,temperature regulation,and sexual behavior.

In the neuron,neurotransmitters are stored in the myelin sheaths.

Unlike neurons,glial cells in the brain are purely for support and are incapable of communicating with each other.

The process in which enzymes within neurons convert precursors into neurotransmitter molecules is called

The actions of drugs on neurotransmitter systems can be divided into two main types.What are they?

Neural centers controlling vomiting and respiration are found in the

Which of these is NOT one of the four important regions found in every neuron?

One of the main ways that drugs can affect neurotransmitter systems is by cutting off blood flow to a specific brain structure.

Weight control,aggression,impulsivity,and psychological depression have all been associated with

Parasympathetic and sympathetic refer to the two branches of the

channels,which is the mechanism that leads to

The brain imaging technique that involves injection of radioactive chemicals in order to measure brain function is called