CH 27 HW
urethra: clear, viscous mucus that neutralizes urine
Which gland is NOT matched with its type of secretion? -bulbourethral glands: lubricating secretion -urethra: clear, viscous mucus that neutralizes urine -seminal vesicles: 70% of seminal volume -prostate gland: milky, acidic semen
epididymis: produce sperm
Which male reproductive structure is NOT correctly matched with its function? -seminal vesicles: produce semen -bulbourethral gland: neutralize urethra before ejaculation -epididymis: produce sperm -ductus deferens: carry sperm toward ejaculation
secondary oocyte
Which of the following cells is released during ovulation? ovum secondary oocyte primary oocyte oogonium
type A daughter cells
Which of the following cells remains at the basal lamina to continue the pool of dividing germ cells? type A daughter cells type B daughter cells primary spermatocytes secondary spermatocytes
inhibin
Which of the following reduces circulating blood levels of follicle-stimulating hormone (FSH) when the sperm count is high? luteinizing hormone (LH) androgen-binding protein (ABP) inhibin estradiol
interphase.
A cell preparing to undergo meiosis duplicates its chromosomes during prophase I. anaphase I. meiosis II. interphase. metaphase I.
luteinizing hormone (LH)
A surge in __________ directly triggers ovulation. luteinizing hormone (LH) follicle-stimulating hormone (FSH) progesterone estrogen
prophase I.
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? Metaphase I. telophase I. meiosis II. anaphase I. prophase I.
homologous chromosomes stick together in pairs
During prophase I of meiosis, -chromosome pairs are positioned in the middle of the cell. -the homologous chromosomes separate and move towards opposite poles. -homologous chromosomes stick together in pairs. -there are two daughter cells, each with 23 chromosomes. -there are four haploid daughter cells.
the endometrium prepares for implantation
During the secretory phase of the uterine cycle, __________. the functional layer of the endometrium regenerates ovulation occurs the endometrium is shed the endometrium prepares for implantation
menstrual phase
During what phase of the female's uterine cycle is the uterine lining shed? preovulatory phase menstrual phase secretory, or postovulatory, phase proliferative phase
the follicular phase
Formation of a secondary oocyte occurs during __________. ovulation pregnancy the follicular phase the luteal phase
interstitial cells: androgen secretions
In males, which of the following includes the correct target and result of LH stimulation? sustentacular cells: increase testosterone sustentacular cells: increase spermatogenesis interstitial cells: androgen secretions interstitial cells: ABP secretions
four haploid cells.
Meiosis starts with a single diploid cell and produces eight haploid cells. two diploid cells. four haploid cells. two haploid cells. four diploid cells.
stratum functionalis; stratum basalis
The __________ is shed during each menstruation and is then regenerated by the __________. stratum basalis; stratum functionalis stratum functionalis; stratum basalis myometrium; perimetrium stratum functionalis; myometrium
prophase I, metaphase I, anaphase I, telophase I, cytokinesis, meiosis II.
The correct order of events during meiosis is -metaphase I, prophase I, telophase I, anaphase I, cytokinesis, meiosis II. -prophase I, anaphase I, metaphase I, telophase I, meiosis II, cytokinesis. -metaphase I, prophase I, anaphase I, telophase I, cytokinesis, meiosis II. -prophase I, anaphase I, telophase I, metaphase I, meiosis II. -prophase I, metaphase I, anaphase I, telophase I, cytokinesis, meiosis II.
follicle-stimulating hormone; androgen-binding protein
The release of __________ encourages sustentocytes to release __________. luteinizing hormone; androgen-binding protein follicle-stimulating hormone; androgen-binding protein luteinizing hormone; testosterone inhibin; testosterone
growth hormone
What anterior pituitary-produced hormone works in conjunction with gonadal steroids to promote bone development? luteinizing hormone growth hormone follicle-stimulating hormone prolactin
ovulation
What event coincides with the transition from the proliferative phase to the secretory phase? ovulation Enrichment of the blood supply and glandular secretions prepare for reception of an embryo. menstruation Stratum functionalis is shed.
to prevent activation of the immune system of the male against the developing sperm
What is the function of the blood-testis barrier? -to ensure that semen contains only sperm and seminal fluid -to prevent activation of the immune system of the male against the developing sperm -to provide only select nutrients to the developing sperm -to filter out male sex hormones
corpus luteum
What ovarian structure forms at the beginning of the secretory phase, encouraging its progress, and then degenerates just before menses? corpus luteum corpus albicans primary follicle vesicular follicle
interruption of sustentocytes' production of ABP
Which of the following would most directly interfere with sperm production? ingestion of a substance that mimicked inhibin low sperm count interruption of sustentocytes' production of ABP use of synthetic steroids (testosterone)
The unequal cytoplasmic division that results in one egg and three polar bodies ensures that a fertilized egg has ample nutrients for its journey to the uterus.
Why does only one egg, rather than four eggs, develop during oogenesis, given that spermatogenesis results in four sperm formed from one stem cell? -The egg does not go through the meiotic division processes that the sperm undergo. -Only one egg can be fertilized at a time. -The unequal cytoplasmic division that results in one egg and three polar bodies ensures that a fertilized egg has ample nutrients for its journey to the uterus. -Actually, gametogenesis (oogenesis in the female and spermatogenesis in the male) produces four eggs and four sperm.