Your answer : a. The estrogen injections will increase the rat's vertebral bone density (indicated by a less-negative T score). Predict Question 3: What effect will the calcitonin injections have on the calcitonin-treated rat's vertebral bone density? Your answer : b. The calcitonin injections will decrease the rat's vertebral bone density (indicated by a more-negative T score). Experiment Data: Rat Elapsed Days Saline injections Estrogen injections Calcitonin injections T score Control 7 7 0 0 -2.84 Estrogen 7 0 7 0 -1.69 Calcitonin 7 0 0 7 -2.28
09/22/16 page 3 Post-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Saline injections were used in this experiment to measure the effect of You correctly answered: c. a placebo on bone density. 2. In the ovariectomized rats used in this experiment You correctly answered: d. osteoporosis was evident prior to the injections of estrogen. 3. Injection of calcitonin into an ovariectomized rat will You correctly answered: b. inhibit osteoclast activity and stimulate calcium uptake and deposition in long bones. 4. As the rat's bone density increases You correctly answered: a. the X-ray scanning assay reports a less-negative T-score.
09/22/16 page 4 Review Sheet Results
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- Fall '08
- Ovarian follicle, vertebral bone density