Chapter 28 - the Reproductive System

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* Question 1
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| The period of time when secondary sexual characteristics begin to develop and the potential for sexual reproduction is reached is called [a] . The first menses is called [b] , and the permanent cessation of menses is called [c] | | | | | | |

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Correct Answers for: a|  puberty|
Correct Answers for: b|  menarche|
Correct Answers for: c|  menopause|
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* Question 2
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| Spermatogenesis does not occur at normal core body temperature.| | | | | Correct Answer:|  True|
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* Question 3
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| The route of sperm from the production in the testes to the exterior of the body is: seminiferous tubules, straight tubules, rete testes, epididymis, ductus (vas) deferens, ejaculatory duct, prostatic urethra, membranous urethra, spongy urethra, external urethral orifice.| | | | | | |

Correct Answer:|  True|
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* Question 4
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| Which of the following are functions of Sertoli cells? (1) protection of developing spermatogenic cells, (2) nourishment of spermatocytes, spermatids, and sperm, (3) phagocytosis of excess sperm cytoplasm as development proceeds, (4) media-tion of the effects of testosterone and FSH, (5) control of movements of spermatogenic cells and release of sperm into the lumen of seminiferous tubules.| | | | | | |

Correct Answer:|   1, 2, 3, 4, and 5|
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* Question 5
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| Which of the following are true? (1) An erection is a sympathetic response initiated by sexual stimulation. (2) Dilation of blood vessels supplying erectile tissue results in erection. (3) Nitric oxide causes smooth muscle within erectile tissue to relax, which results in widening of blood sinuses. (4) Ejaculation is a sympathetic reflex coordinated by the sacral region of the spinal cord. (5) The purpose of the corpus cavernosa penis is to keep the spongy urethra open during ejaculation.| | | | | | |

Correct Answer:|   2 and 3|
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* Question 6
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| Which of the following are true concerning estrogens? (1) They promote development and maintenance of female reproductive structures and secondary sex characteristics. (2) They help control fluid and electrolyte balance. (3) They increase protein catabolism. (4) They lower blood cholesterol. (5) In moderate levels, they inhibit the release of GnRH and the secretion of LH and FSH.| | | | | Correct Answer:|   1, 4, and 5|

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* Question 7
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| Which of the following statements are correct? (1) A sperm head contains DNA and an acrosome. (2) An acrosome is a specialized lysosome that contains enzymes that enable sperm to produce the ATP needed to propel themselves out of the male reproductive tract. (3) Mitochondria in the midpiece of a sperm produce ATP for sperm motility. (4) A sperm's tail, a flagellum, propels it along its way. (5) Once ejaculated, sperm are viable and normally are able to fertilize a secondary oocyte for 5 days.| | | | | Correct Answer:|   1, 3, and 4|

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* Question 8
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| Which of the following statements are correct? (1) Spermatogonia are stem cells because when they undergo mitosis, some of the daughter cells remain to serve as a reservoir of cells for future mitosis. (2) Meiosis I is a division of pairs of chromosomes resulting in daughter cells with only one member of each chromosome pair. (3) Meiosis II separates the chromatids of each chromosome. (4) Spermiogenesis involves the maturation of spermatids into sperm. (5) The process by which the seminiferous tubules produce haploid sperm is called spermatogenesis.| | | | | | |

Correct Answer:|   1, 2, 3, 4, and 5|
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* Question 9
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| Which of the following statements are correct? (1) Cells from the yolk sac give rise to oogonia. (2) Ova arise from the germinal epithelium of the ovary. (3) Primary oocytes enter prophase of meiosis I...
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