Ch.27 Reproduction System Questions
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| Genetic variation is NOT enhanced through: | mitosis.
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| In response to parasympathetic stimulation: | blood flow increases to the penis. Parasympathetic stimulation causes NO to release, causes penile arterioles to dilate, allows the erectile bodies to fill w/blood.
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| The basic difference between spermatogenesis and oogenesis is that: | one mature ovum is produced in oogenesis, and four mature sperm are produced in spermatogenesis.
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| The organ that makes estrogen and progesterone is the: | ovary. The ovaries, which make estrogen and progesterone, are the primary sex organs of the female.
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| The primary sex organ of the male is the: | testes.
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| The reason the testes are suspended in the scrotum is: | to provide for a cooler temperature. Spermatogenesis requires a cooler temperature.
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| The sperm's acrosome: | contains enzymes. The acrosome contains enzymes, which allow the sperm to penetrate the egg.
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| The surge in LH that occurs during the middle of the ovarian cycle triggers: | ovulation. The surge in LH that occurs during the middle of the ovarian cycle triggers ovulation, which, on average, occurs on average at day 14 of the monthly cycle.
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| The usual site of fertilization is the: | uterine tube.
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| The uterine layer shed with each monthly cycle is the: | functional layer of endometrium. This innermost layer is shed when hormone levels drop at the end of the monthly cycle.
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| __________ cells, located between seminiferous tubules, produce testosterone. | Interstitial Interstitial, or Leydig, cells produce testosterone.
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| Which uterine phase does the functional layer of the endometrium start to rebuild? | Proliferative The functional layer of the endometrium starts to rebuild in the proliferative phase, which is initiated by rising estrogen levels.
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| What's the most common sexually transmitted disease in the U.S.? | Chlamydia Chlamydia, the most common sexually transmitted disease in the U.S., is an intracellular parasite.
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| Which cell type is actually ovulated from the ovary? | Secondary oocyte
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| Which is the most correct sequence of sperm flow in the male duct system? | Seminiferous tubules, epididymis, vas deferens, ampulla, ejaculatory duct, urethra
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| Which male structure is homologous to the female's clitoris? | Penis
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| Which represents a correct cascade of reproductive hormones in males? | GnRH, LH/FSH, testosterone, inhibin
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| Within the ovary, progesterone is produced by the: | corpus luteum.
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| Sperm are produced in the: | seminiferous tubules.
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| Ovulation in a typical, or "average," cycle usually occurs on day: | 14
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| What hormone is responsible for the secondary sex characteristics found in women? | Estrogen
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| If the testes are both removed before puberty, will secondary sex characteristics develop in the male? | No, they won't develop and the man will be sterile.
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| The muscular wall of the uterus is called the: | Myometrium
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| Which of the following hormones causes the oocyte to mature? | FSH FSH stimulates the follicular cells and oocyte.
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