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A&P repro
biology, anatomy and physiology, reproduction, development, ovulation
| Qn | Answer |
|---|---|
| contains hydrolytic enzymes (hyaluronidase & proteinase) that aid in penetration of sperm into secondary oocyte | acrosome |
| Which cell produces inhibin? | sertoli cell |
| final step of spermatogenesis | spermiogenesis |
| spermatogenesis occurs here | seminiferous tubules |
| LH stimulates this cell to reproduce androgen | Leydig cell |
| cells in the testes | spermatogenic, sertoli, leydig |
| hormone that stimulates spermatogenesis | FSH |
| inhibits FSH production | inhibin |
| produces or forms blood-testis barrier | sertoli cell |
| site of storage & maturation of sperm | epididymis |
| storage & transport of sperm | vas deferens |
| dilated portion of the vas deferens | ampulla |
| forms the ejaculatory duct | ampulla & seminal vesicle duct |
| form prostatic urethra | ejaculatory duct & duct from the prostate |
| What directly stimulates the corpus luteum to produce increased amounts of estrogen and progesterone? | LH |
| What is the corpus luteum? | a Graafin follicle without the ovum |
| What stimulates follicular development and oogenesis? | FSH |
| During which phase is estrogen produced? | Follicular and luteal |
| What stimulates the sloughing off of the stratum functionalis? | Low amounts of estrogen and progesterone |
| Why does the stratum functionalis slough off when there is no fertilization? | Because the secretory phase is not being maintained by estrogen and progesterone |
| Which cell is not in the seminiferous tubule? | Leydig cell |
| Which cell produces androgen? | Leydig cell |
| What stimulates the Leydig cell to produce androgen? | LH |
| Which structure secretes the most alkaline fluid? | Seminal vesicle |
| Which gland secretes an acidic fluid? | the prostate gland |
| Is semen slightly alkaline or slightly acidic? | slightly alkaline |
| Which cell forms the blood-testes barrier and provides nourishment for the spermatozoa? | the sertoli cell |
| Why does the stratum functionalis slough off? | because the secretory phase is not being maintained by adequate estrogen and progesterone levels |
| When is hCG first produced? | 8 days after fertilization or 2 days after implantation |
| What secretes hCG? | chorion |
| What structures are produced by the ectoderm of the embryoblast? | Epidermis, all nervous tissue, adrenal medulla (norepinephrine or epinephrine) |
| What structures are produced by the mesoderm? | Blood, bone, all muscle tissue, dermis, kidney, adrenal cortex (zonas), gonads (not placenta) |
| What contains urine and helps regulate body temperature? | amnionic fluid |
| What serves as the early site of blood formation? | allantois |
| What do the umbilical arteries carry? | CO2 |
| What does the umbilical vein carry? | Oxygen |
| What is the vascularized outpouching of the yolk sac? | allantois |
| When does the corpus luteum produce high amounts of estrogen and progesterone? | before 20 weeks |
| When does the placenta produce high amounts of estrogen and progesterone? | after 20 weeks |
| When does the placenta produce high amounts of hCG? | before 20 weeks |
| When does the placenta produce high amounts of hCG and high amounts of estrogen and progesterone? | never |
| When does the placenta produce low amounts of estrogen and progesterone and high amounts of hCG? | before 20 weeks |
| When does the placenta produce low amounts of hCG and high estrogen/progesterone? | after 20 weeks |
Created by:
shaswi
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