an increase in bone growth is promoted by which hormones?
A.) Human growth hormone and parathyroid
B.) Calcitriol and human growth hormone
C.) Parathyroid and insulin
D.) Insulin and human growth hormone
E.) Calcitonin and Calcitriol
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Human growth hormone is a protein. The growth hormone of humans has a molecular weight of 21500 and consists of 190 amino acids. The growth hormone stimulates growth of all the body cells including the skeletal and muscular tissues. Under secretion of the growth hormone during the years of skeletal growth of an individual results in dwarfism, whereas an over secretion of the growth hormone prior to adulthood result in gigantism.
The parathyroid glands produce two hormones for regulating the blood calcium and phosphorous. One of them, the parathormone is released when the blood calcium level is low and tends to elevate the level.
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