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Biology: The Unity and Diversity o...
Biology: The Unity and Diversity o...
Low blood calcium triggers secretion by ________.
- a. adrenal glands
- b. ovaries
- c. parathyroid glands
- d. the thyroid gland
Introduction: Parathyroid gland is situated just behind the thyroid gland present in the neck that is involved in regulation of calcium levels in the blood. Parathyroid gland releases parathyroid hormone when it receives a feedback of lower level of calcium in the blood. Parathyroid hormones perform its action in the bones, kidneys, and intestine to make the calcium level of the body back to normal.
Reason for the correct answer:
Parathyroid hormone helps to maintain the calcium level of the body. When there is a decrease in the calcium level in the body, the hormones stimulate the bone to release calcium into the blood. Otherwise, it initiates the increased absorption of calcium from the intestine or decreases the loss of calcium from urine. An increased level of calcium in the blood inhibits the release of parathyroid hormone from the glands.
Option c. is given as “Parathyroid gland”.
Hence, the correct answer is option c.
Reasons for the incorrect answers:
Option a. is given as “Adrenal gland”. This is incorrect because the adrenal gland located beside the kidneys is involved in the secretion of steroid hormone and cortisol into the blood stream...
Chapter 34 Solutions
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