Brain Imaging Studies Suggest That the Commonly Abused Dose of Cocaine

question 84

Multiple Choice

Brain imaging studies suggest that the commonly abused dose of cocaine blocks:

• A)only about 20 percent of dopamine transporters.
• B)about 30 percent of dopamine transporters.
• C)more than 60 percent of dopamine transporters.
• D)virtually all dopamine receptors in the brain.

Describe the structure and function of the pharynx and its role in the respiratory and digestive systems.

Identify and describe the roles of the nasal structures in the process of respiration.

Understand the role and structure of the alveoli and microanatomy of the gas exchange surfaces.

Understand the concepts of respiratory volumes and capacities.

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Definitions:

Postsynaptic Neuron

The neuron that receives a signal (neurotransmitters) from another neuron at a synapse, following the presynaptic neuron.

Stimulant Drug

Substances that increase activity in the central nervous system, resulting in increased alertness and energy.

Parasympathetic

Part of the autonomic nervous system responsible for rest and digestion, counterbalancing the sympathetic system.

Sympathetic

Relating to the sympathy, characterized by feelings of compassion or commiseration towards others.