Homework #1 Q&A

All of the following help to maintain a neuron's resting potential except:

Sodium ions building up inside the neuron

Which of the following describe a pharmacodynamic action?

A drug binds to a neuron and alters the neuron's activity

Which nervous sytem is responsible for delivering voluntary motor signals from the CNS to muscles throughout the body?

Somatic Nervous System

Which of the following would NOT be an example of having an activated sympathetic nervous system?

Constricted airways

A drug that has high potential for abuse but still has legitimate medical used would be classified as:

Scheduled 2 medication

Which of the following are afferent neurons, relative to the central nervous system?

Sensory neurons

All of the following neurotransmitters are classified as catecholamines EXCEPT:

Serotonin

If a drug severely depressed the functioning of the medulla, which of the following might be likely to occur?

The person may stop breathing

Pharmacodynamics is the study of...

The physiological actions of the drugs

If a neuroscientist stated that a brain structure had efferent neurons, what can be concluded?

The structure sends information to other neurons

A sodium-potassium pump brings:

Two potassium ions into the neuron and expels three sodium ions from the neuron

For a certain product, its brand name is Tylenol, its generic name is acetaminophen, and 5-para-acetyl-phenol would be its...

Chemical name

During the ___________________, the neuron is incapable of producing another action potential.

Absolute refractory period

Why might the speed of electrical transmission be faster for a myelinated neuron compared to an unmyelinated neuron?

Actions potentials need only occur at gaps between myelin sheaths

Which cell causes endothelial cells to fit closely together?

Astrocytes

A researcher found that a drug increased heart rate. Which nervous system was the drug most likely acting upon?

Autonomic Nervous System

A drug that is hydrophilic means that it:

Dissolves in water

The difference between the electrical charge within a neuron and the electrical charge of the environment immediately outside the neuron is called a(n):

Electrical potential

The number of action potentials occurring per unit of time is referred to as the:

Firing rate

Ions flow through pores in a neuron's membrane called:

Ion channels

Norepinephrine secreting neurons originate from the:

Locus coeruleus

The autonomic nervous has control centers in the:

Medulla

Oligodendrocytes form:

Myelin around axons

Specialized cells in the nervous system that control behavior, senses, and movement are called:

Neurons

_____, a major area of pharmacology, refers to the passage of drugs through the body

Pharmacokinetics

Drugs used to treat disorders are referred to as:

Pharmacotherapeutic drugs

Which of the following Clinical Trial Phases best describes a drug tested at low doses for only a short period of time?

Phase 1

Which of the following fields are encompassed in psychopharmacology?

Psychology and pharmacology

If a researcher said that a substance had produced hyperpolarization, she means that:

the charge in the neuron became more negative