A tubal pregnancy occurs with prenatal development in the ____________________.
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Question 2) The hypothalamic hormone _________ is thought to play a role in labor initiation.
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Question 3) The entire process of movement of the sperm and sex gland secretions out of the male reproductive tract is called ____________________; emptying of semen into the urethra is known as ____________________; forceful ejection of sperm from the penis is called ____________________.
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Question 4) The four phases of the sexual cycle in both sexes are ____________________, ____________________, ____________________, and ____________________ phases.
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Question 5) The ____________________ of a spermatozoon contains the sperm's genetic information; the ____________________ is an enzyme-filled vesicle for penetrating an ovum; power-generating mitochondria are concentrated in the sperm's ____________________; the ____________________ is a whip-like structure comprised of microtubules.
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Question 6) The ____________________ of the testes secrete testosterone under the hormonal influence of ____________________.
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Question 7) A(n) ____________________ is the cutting and tying off of the ductus deferens.
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Question 8) The three major stages of spermatogenesis are ____________________, ____________________, and ____________________.
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Question 9) The nucleus is located in the ____________________ of the sperm.
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Question 10) The single gene within the Y chromosome that is responsible for sex determination is the ____________________.
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