Final Exam (8 wk semester course) Flashcards
What is a control group in an experiment?
The control group is made up of subjects who do not receive the treatment to be evaluated or measured.
What are experimental groups?
Experimental groups are made up of subjects who receive a variable amount or duration of a certain treatment.
What are variables?
Variables are measured quantities of a treatment.
What group receives placebos in drug trials?
The control group receives placebos in drug trials.
What group receives various dosages of the investigated drug?
Experimental groups receive various dosages of the investigated drug.
What are double-blind studies?
In double-blind studies, neither the test subjects nor the researchers know who gets the drug and who gets the placebo.
What is peer review?
Peer review is the critical examination of the results of an experiment before publication
Identify as either POS or NEG feedback:
The dilation of the vessels in the extremities indicated by swollen tissue and a tightly fitting ring because of hot weather is an example of
NEGATIVE FEEDBACK
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The dilation of pupils exposed to dim light and their constriction when suddenly exposed to bright light is an example of
NEGATIVE FEEDBACK
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After cutting yourself with a knife, a chemical reaction that creates a blood clot will start and continue until the bleeding has stopped. This is an example of
POSITIVE FEEDBACK
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When you contract a bacterial infection, your body’s temperature will begin to rise to 100° F, then to 102° F, and possibly to 104° F. High temperatures create a hostile environment for the bacteria. Rising temperature caused by a bacterial infection is an example of
POSITIVE FEEDBACK
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The release of oxytocin from the posterior pituitary in response to a contraction of the uterus during childbirth is an example of
POSITIVE FEEDBACK
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The release of calcitonin (a hormone that lowers the calcium level in the blood) in response to calcium levels higher than 9–11 mg/dl (normal range) is an example of
NEGATIVE FEEDBACK
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The release of parathormone (a hormone that increases the calcium level in the blood) in response to calcium levels lower than 9–11 mg/dl is an example of
NEGATIVE FEEDBACK
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A decrease in blood pressure will result in an increased heart rate. This is an example of
NEGATIVE FEEDBACK
