Exam 4: The Nervous System

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

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

channels,which is the mechanism that leads to

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

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

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

______________ results from a loss of myelin wrappings.

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

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

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

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

Parasympathetic and sympathetic refer to the two branches of the

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

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

Neural centers controlling vomiting and respiration are found in the

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

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

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

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

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