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54 Cards in this Set
- Front
- Back
Meiosis starts with a single diploid cell and produces
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four haploid cells.
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A cell preparing to undergo meiosis duplicates its chromosomes during
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interphase.
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During prophase I of meiosis
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homologous chromosomes stick together in pairs.
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The correct order of events during meiosis is
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prophase I, metaphase I, anaphase I, telophase I, cytokinesis, meiosis II.
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During meiosis, segments of nonsister chromatids can trade places. This recombination of maternal and paternal genetic material is a key feature of meiosis. During what phase of meiosis does recombination occur?
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prophase I.
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Mitosis produces cells that are ___________; meiosis produces cells that are ___________.
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diploid; haploid
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The primary sex organs are also called __________.
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gonads |
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Synapsis and crossing over takes place during __________.
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prophase I of meiosis
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Two identical copies of the same chromosome are called __________.
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sister chromatids
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The mode of cell division that results in the formation of daughter cells that are genetically identical to the original cell is called _____.
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mitosis |
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Complete this analogy: Testes are to gonads as sperm are to:
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gametes.
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The reduction in the number of chromosomes to half the normal count occurs during:
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meiosis.
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A parent cell has 28 chromosomes and completes meiosis. How many chromosomes result in each cell produced?
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14 chromosomes
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The fusion of sperm and egg is known as:
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fertilization.
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Meiosis is a special type of cell division that produces:
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gametes.
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Which structure is part of both the reproductive and the urinary system in males?
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urethra
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Which of the following glands produces the majority of the fluid in semen?
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seminal vesicles
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Where does sperm production occur within the testis?
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seminiferous tubules
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Which of the following male accessory sex glands produces a yellowish secretion containing fructose, prostaglandins, coagulating proteins and enzymes?
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seminal vesicle
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Semen is expelled from the body during:
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ejaculation |
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The stem cells that give rise to new sperm are called __________.
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spermatogonia
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Which hormone is directly responsible for the development of secondary sex characteristics in males?
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testosterone
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The process of male gamete, or sperm cell, development is known as:
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spermatogenesis.
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How many spermatids result from one spermatogonium?
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4 |
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Spermiogenesis begins with a ________ and ends with a ________.
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spermatid, sperm
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Which of the following is the main hormone that regulates spermatogenesis?
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testosterone
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A male bodybuilder takes testosterone supplements to increase his muscle mass. After three weeks, which of the following do you expect to observe?
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Excess testosterone inhibits production of gonadotropin-releasing hormone (GnRH).
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At what point in life does spermatogenesis begin in a male?
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puberty |
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The structures that catch the oocyte upon ovulation are the __________.
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fimbriae
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The innermost epithelial layer of the uterus is the __________.
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endometrium
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Where does fertilization usually occur?
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ampulla of the uterine tube
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Where should a fertilized ovum implant?
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uterus
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Which of the following is the most inferior portion of the uterus?
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cervix |
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What portion of the uterus is composed of smooth muscle and contracts rhythmically during orgasm and childbirth?
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myometrium
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What part of the female reproductive system receives the penis during sexual intercourse?
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vagina |
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Which of the following is the correct order of developing follicles and their remnants during the ovarian cycle?
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primordial follicle ( secondary follicle ( vesicular follicle ( corpus luteum
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In the female reproductive system, FSH stimulates __________.
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granulosa cells to produce estrogens
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All of the following are female secondary sex characteristics EXCEPT __________.
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enlarged larynx
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The process by which immature follicles degenerate and are resorbed during the follicular phase of the menstrual cycle is called __________.
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artesia
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Secondary oocytes form __________.
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between puberty and menopause
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The hormone produced by the corpus luteum that is the primary ovarian hormone after ovulation is __________.
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progesterone
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Which of the following can be fertilized?
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secondary oocyte
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Which follicle contains a secondary oocyte arrested in metaphase II?
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vesicular (tertiary) follicle
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Place these stages of the ovarian cycle in the correct order.
1) Corpus albicans 2) Vesicular (tertiary) follicle 3) Primary follicle 4) Ruptured follicle 5) Primordial follicle 6) Secondary follicle 7) Corpus luteum |
5, 3, 6, 2, 4, 7, 1
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Ovulation is triggered by a surge in: |
luteinizing hormone (LH).
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Which of the following is regulated by a positive feedback mechanism in females?
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ovulation
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Which portion of the uterus is shed during menstruation?
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stratum functionalis of the endometrium
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When menstruation has ceased for at least one year, what has occurred?
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female climacteric, or menopause
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What type of birth control may prevent pregnancy by manipulating the hormones and interfering with ovulation?
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hormonal method |
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Which of the following is a barrier method of birth control?
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diaphragm |
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The most common cause of cervical cancer is __________.
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HPV infection |
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Which of the following is NOT a bacterial sexually transmitted infection (STI)?
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genital herpes
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What is the cause of trichomoniasis?
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parasite
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Which of the following may be prevented with a vaccine?
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human papillomavirus (HPV)
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