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