One function of the integumentary system is to act as a barrier to bacteria, however there are many microbes that already live on or in our bodies without causing infections
Some treatments for acne include specific oral antibiotics, such as erythromycin and tetracycline, to reduce the amount of Propionibacterium acnes on the skin and in the follicles. Knowing there are both ‘good' and ‘bad' bacterial forms of P. acnes, which of the following statements about using antibiotics is true? Check all that apply.
What will be an ideal response?
__X__
Some "good" bacteria are reduced.
__X__
Some "bad" bacteria are reduced.
_____
Only "bad" bacteria are reduced.
__X__
Some new bacterial infections can begin.
__X__
Some new bacterial infections can be prevented.
_____
Only old infections can be controlled.
__X__
Some "good" bacteria can become resistant and therefore lead to more infections.
__X__
Some "bad" bacteria can become resistant and therefore lead to more infections.
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A scant amount or frequency of urination is ____________________________
Fill in the blank(s) with correct word
Predict what happens to end diastolic volume when an increase in heart rate is not accompanied by an increase in contractility.
A. End diastolic volume is increased. B. End diastolic volume is decreased. C. End diastolic volume is unchanged. D. End diastolic volume is not affected by heart rate.
What is a gene?
A) A gene is a sequence of three nitrogenous bases along a DNA strand. B) A gene is a polypeptide formed by linked amino acids. C) A gene is a sequence of three nitrogenous bases along an RNA strand. D) A gene is a portion of a DNA strand that functions as a hereditary unit and codes for a specific protein. E) A gene is the sequence of tRNAs needed to form a polypeptide.
To exhale forcibly, one would contract the:
A) diaphragm alone. B) internal intercostals and diaphragm. C) external intercostals and diaphragm. D) rectus abdominis and diaphragm.