Parathyroid hormone is released into the blood when the amount of calcium in the blood is too ________.
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Q45: In a human male,the _ secrete hormones
Q46: Because steroid hormones are _,they are able
Q47: Which of the following statements about the
Q48: In a human female,the hormone _ controls
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Q51: After ovulation,
A) gonadotropin levels rise quickly.
B) estrogen
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Q54: A(n)_ is a specialized organ in which
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