Which of the following statements regarding calcium homeostasis is true?
A. When blood calcium levels are too low, osteoclast activity increases.
B. Parathyroid hormone increases calcium loss from the kidney.
C. Increased osteoblast activity increases blood calcium levels.
D. Calcitonin elevates blood calcium levels.
E. Parathyroid hormone inhibits osteoclast activity.
A
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Joshua has had a portion of his liver removed. His physician is confident that Joshua will improve because the liver will regenerate. How is this possible?
A. Permanent cells of the liver are able to divide and replace the removed liver tissue. B. Neurons associated with the liver differentiate into liver cells to replace the missing tissue. C. Stabile cells of the liver are able to divide and replace the removed liver tissue. D. New cells are not formed; the remaining tissue just spreads out, filling the newly formed space.
The scapula is part of the ________ girdle.
Fill in the blank(s) with the appropriate word(s).
Each lung consists of a number of segments called
A. systemic segments. B. alveolar segments. C. pleural segments. D. mesothelial segments. E. bronchopulmonary segments.
The form of anemia caused by lack of dietary iron is
A. pernicious anemia. B. iron deficiency anemia. C. aplastic anemia. D. hemolytic anemia.