In your study of a drug's efficacy in treating hypertension, your subjects are white males, ages 40 to 60 years. Is your study applicable to all people? Explain.
What will be an ideal response?
Possibly, but not necessarily. There are gender differences in appropriate therapies because of physiological effects of higher testosterone in males compared to females, for example. Drugs are often not tested in children, and children also have a different hormonal environment than adults (again, sex hormones are a good example, because their levels are low until just before the onset of puberty). There are also racial differences in effectiveness of therapies, and while it is a contentious issue as to whether these represent genetic or socioeconomic influences, they should be considered.
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Wrinkled and sagging skin results from
A) excess subcutaneous fat. B) drinking too much water. C) loss of subcutaneous fat, elastin, and collagen. D) heredity only.
The __________ ligament encircles the head of the radius and enables it to pivot on the ulna.
Fill in the blank(s) with the appropriate word(s).
Which is the second phase of the swallowing process, beginning when the bolus comes into contact with the palatal arches?
A) pharyngeal phase B) buccal phase C) duodenal phase D) esophageal phase E) gastric phase
The term "stratum germinativum" is sometimes used to refer to the ________.
A. stratum spinosum B. stratum lucidum C. stratum basale D. stratum granulosum E. stratum corneum