What function is served by motile cilia on epithelial cell surfaces?
A) produce muscle contraction
B) propel material across the cell surface
C) propel sperm
D) move organelles
E) move materials through cytoplasm
Answer: B
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Which of the following statements is false regarding micturition?
A) When you relax the external urethral sphincter, the internal sphincter will relax. B) Urination will be completed despite voluntary opposition. C) Parasympathetic nervous control is involved with the micturition reflex. D) Stretch receptors in the bladder are stimulated by the warm temperature of the urine. E) Bladder contractions can force open the internal urethral sphincter.
Extreme losses of bicarbonate ions, such as in diarrhea, will cause
A) acute respiratory acidosis. B) chronic respiratory acidosis. C) respiratory alkalosis. D) metabolic acidosis. E) metabolic alkalosis.
The full closure of bone growth plates occurs during:
a. late childhood b. early adolescence c. late adolescence d. early adulthood
Which of the following is not seen in Addison's disease?
a. Marked Na+ loss in the urine b. Lowered blood glucose levels c. K+ retention d. Protein mobilization e. Poor response to stress