Betty has a calcium poor diet and because of her age (menopause years) she is concerned about becoming hypocalcemic (low blood calcium). Once the blood levels of calcium start dropping, the body will compensate for hypocalcemia. Receptors continually feed the brain’s
Betty has a calcium poor diet and because of her age (menopause years) she is concerned about
becoming hypocalcemic (low blood calcium). Once the blood levels of calcium start dropping, the body
will compensate for hypocalcemia. Receptors continually feed the brain’s hypothalamus (blood-calcium
regulatory center) information on calcium blood levels. The parathyroid gland will be stimulated to
release parathyroid hormone (PTH). PTH will stimulate osteoclast cells to break down bone and release
the stored calcium to the blood, raising the calcium blood level.
a. What is the stimulus?
b. What is the control center?
c. Identify the control center’s response to the stimuli?
d. Does the response stop/reverse the stimuli or enhance the stimuli?
e. Is the body’s response a negative or positive feedback?
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