Meiosis starts with a single diploid cell and produces
four haploid cells.
four diploid cells.
eight haploid cells.
two haploid cells.
two diploid cells.
A cell preparing to undergo meiosis duplicates its chromosomes during
During prophase I of meiosis,
there are two daughter cells, each with 23 chromosomes.
chromosome pairs are positioned in the middle of the cell.
homologous chromosomes stick together in pairs.
the homologous chromosomes separate and move towards opposite poles.
there are four haploid daughter cells.
The correct order of events during meiosis is
prophase I, anaphase I, metaphase I, telophase I, meiosis II, cytokinesis.
prophase I, anaphase I, telophase I, metaphase I, meiosis II.
metaphase I, prophase I, anaphase I, telophase I, cytokinesis, meiosis II.
prophase I, metaphase I, anaphase I, telophase I, cytokinesis, meiosis II.
metaphase I, prophase I, telophase I, anaphase I, cytokinesis, meiosis II.
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?
Art Based Question
Can you fill in the meiosis concept map?
Which of the following reduces circulating blood levels of follicle-stimulating hormone (FSH) when the sperm count is high?
androgen-binding protein (ABP)
luteinizing hormone (LH)
Which of the following would most directly interfere with sperm production?
ingestion of a substance that mimicked inhibin
interruption of sustentocytes' production of ABP
low sperm count
use of synthetic steroids (testosterone)
The release of __________ encourages sustentocytes to release __________.
luteinizing hormone; testosterone
luteinizing hormone; androgen-binding protein
follicle-stimulating hormone; androgen-binding protein
In males, which of the following includes the correct target and result of LH stimulation?
interstitial cells: ABP secretions
sustentacular cells: increase spermatogenesis
interstitial cells: androgen secretions
sustentacular cells: increase testosterone
Which of the following cells is released during ovulation?
Why does only one egg, rather than four eggs, develop during oogenesis, given that spermatogenesis results in four sperm formed from one stem cell?
Actually, gametogenesis (oogenesis in the female and spermatogenesis in the male) produces four eggs and four sperm.
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.
Only one egg can be fertilized at a time.
The egg does not go through the meiotic division processes that the sperm undergo.
Formation of a secondary oocyte occurs during __________.
the luteal phase
the follicular phase
A surge in __________ directly triggers ovulation.
follicle-stimulating hormone (FSH)
luteinizing hormone (LH)
What event coincides with the transition from the proliferative phase to the secretory phase?
Stratum functionalis is shed.
Enrichment of the blood supply and glandular secretions prepare for reception of an embryo.
During what phase of the female’s uterine cycle is the uterine lining shed?
secretory, or postovulatory, phase
What ovarian structure forms at the beginning of the secretory phase, encouraging its progress, and then degenerates just before menses?
During the secretory phase of the uterine cycle, __________.
the endometrium is shed
the functional layer of the endometrium regenerates
the endometrium prepares for implantation
What anterior pituitary-produced hormone works in conjunction with gonadal steroids to promote bone development?
Which male reproductive structure is NOT correctly matched with its function?
epididymis: produce sperm
bulbourethral gland: neutralize urethra before ejaculation
ductus deferens: carry sperm toward ejaculation
seminal vesicles: produce semen
Which gland is NOT matched with its type of secretion?
seminal vesicles: 70% of seminal volume
prostate gland: milky, acidic semen
bulbourethral glands: lubricating secretion
urethra: clear, viscous mucus that neutralizes urine
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
What is the function of the blood-testis barrier?
to prevent activation of the immune system of the male against the developing sperm
to filter out male sex hormones
to ensure that semen contains only sperm and seminal fluid
to provide only select nutrients to the developing sperm
Which of the following statements best describes the round ligament?
It connects the uterus to the labia majora.
It anchors the uterus and the ovary.
It anchors the ovary to the pelvic wall.
It is a large ligament that supports the ovaries, fallopian tubes, and uterus.
The __________ is shed during each menstruation and is then regenerated by the __________.
stratum functionalis; stratum basalis
stratum basalis; stratum functionalis
stratum functionalis; myometrium
Which of the following is an INCORRECT matching of female reproductive structures with their functions?
uterine tube: transport unfertilized ovum to uterus for removal from the body
uterus: the womb--area of development of the fetus
ovarian follicle: ovum (egg) production
vagina: birth canal