A. sensible perspiration B. exocytosis C. insensible perspiration. D. hydration

Question

A. sensible perspiration B. exocytosis C. insensible perspiration. D. hydration 38. Calcitriol regulates calcium homeostasis by the calcium levels i blood plasma. " A. increasing B. decreasing C. not changing D. secreting E. none of the above 39. Parathyroid hormone (PTH) does NOT A. promote calcium reabsorption by the kidneys. B. stimulate osteoclast activity. C. lower blood calcium. D. promote calcitriol synthesis. E. inhibit osteoblast activity of bone deposition. 40. The healing of a fractures involves the following process(es) A. osteoblasts building new bone matrix B. fracture hematoma C. osteoclasts dissolving bone fragments D. soft callus formation of collagen and fibrocartilage E. all of the above 41. Osteoporosis involves A. overactive osteoblasts B. underactive osteoclasts C. a large loss of bone matrix with age D. an increase in calcium and phosphate with age E. all of the above

Explanation / Answer

38. Calcitriol regulates calcium homeostasis by increasing the calcium levels in blood plasma.

39. Parathyroid hormone does NOT  promote calcium reabsorption by kidneys, but only from bones

does NOT Lower blood calcium, but elevates calcium.

  

40. The healing of fractures involves all the above.

41. Osteoporosis involves a large loss of bone matrix with age.

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