Ciliated cells line the
A. respiratory tract.
B. intestine.
C. ureters
D. stomach.
Answer: A
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Normal pH for blood is 7.35 to 7.45. Maintenance of the pH in this range is
A. critical because enzymes work best within narrow ranges of pH. B. not critical because extreme pH values do not affect enzyme function. C. called denaturation. D. not required. E. None of these choices is correct.
All muscle types will respond to an electrical stimulus because all muscle cells are _________.
A. excitable B. contractile C. striated D. involuntary E. isometric
Which type of connective tissue is specialized for calcium storage in the body?
A. Blood B. Fibrocartilage C. Bone D. Areolar connective tissue E. Elastic connective tissue
Graves' disease is due to an autoantibody that binds to and activates the TSH receptor. This interaction would primarily increase which second messenger in the thyroid epithelial cells?
A. Ca++ B. activated STAT C. PI3 kinase D. cGMP E. cAMP