Homework 4: Male Reproductive System

HW4- Male Reproductive System Please answer the following questions by referring to the following powerpoint presentations: "17- Male Repro 1" and "17- Male Repro 2" Male Reproductive System part 1 1. Define: a. Gamete a hupload rell fumed by peiosis b. Zygote the fusion of two gametes (sperareg) c. Fertilization the formation of in zygote by the merging of two yumeles 2. What are the main functions of the Gonads (give at least 2 functions). product gametes & secrete hormones 3. List 3 examples of a "secondary sex organ": mammary glands, penis, Vagina 4. During embryonic development, during which week (approximately) does sexual differentiation occur? the 9th week 5. What is the difference between the Wolffian duct and the Mullerian duct? The Wielffion duct is what forms into the weile reproductive tract in the fetus. The Mulesion duct becomes the female reproductive tract. 6. How does the SRY gene cause sexual differentiation? The SRY gone is found on the Ychromosome. It codes for the development of testes and the secretion of testosterone. 7. What is the importance/function of the Inguinal canal in males? They are the passageways that the hestes take to descend into the grein igion. 8. What is the importance/function of the Scrotum in males? To hold the descended testes & regulede their temperertvg 9. What is the importance/function of the Spermatic cord in males? supports the testes & provides circulatin also contains nervous tissue & lymphatic tissme 10. List the 3 structures involved in Testicular Thermoregulation AND give their functions. aciemuster munch-pulle testis lewend buty to worn it wysalen it gets the cold blondes ante-pitet the xictures, terras & advees the soring wit of the seaction c. pompinifrom planes the reives within the mesomatic card; cach doan the bhed as it is delivered to the tesles 11. Complete the following basic pathway for Sperm production/transport: Seminiferous tubules → Rete Testis → Efferent Ductules epididymis → Vas dierens →Ejaculatory Duct → Urethra. 12. Give the functions/importance for the following cell types found in the Seminiferous Tubules: a. Spermatogonia stemrells that undege merosis to become sprin (immature sperm cells) b. Sertoli (sustentacular) cells provide the alme geen with murishment la protection & miss function in worth removal (cantitatish the testosterone so the haploid gametes developinle sperm) c. Leydig (interstitial) cells secite the testosterere inte the seminiferous. 13. What is the importance of the Blood Testis Barrier? Which cell type forms this barrier? The Blood-task bortion is formed by the sertoli (sustenmcular) cells. This bather the im immune system from attackin attucking the newly created sprem in could the fore on tu yotes due to being haploid). 14. Define and give the overall purpose of Melosis (We will have a' separate discussion on this topic later. For now, you do not need to describe the entire process). Harses in onll division that produces haploid cells. The overall purpose is terisinde gomster (haplarid cells) for sexual reproduction. 15. What is difference between Spermatogenesis vs. Spermlogenesis: Speroralagenesis the process of sperm maturation (meiosis in males) Spormisanosis the final step of spermatogenesis in which the sperm become motile and are now able to fertilize an egg Male Reproductive System part 2 16. List 2 functions of the Epididymis: -Sternge of sperm -absorption of testicular fluids 17. What is the main function of the Vas Deferens: to mix the sperm with semen for capacitation 18. Briefly describe the path of the Vas Deferens through the male body. It carries sperm from the epididymis and loops up over the urinary bladder toward the semient resicle and into the urethio. 19. The Ejaculatory Duct is formed by combining 2 structures: The Vas Deferens and the Seminal glands 20. List 3 functions of Semen: acupacitates sperm b. elevates pit (acts as ab) a propells spelar cilong reproductive front 21. For the 3 glands involved in Semen production, give the following information: 1) Function; 2) Example of a substance produced by the gland; 3) General location in the male body. a. Seminal vesicles 3) posterior to the urinary bladder Iyellowish fird rentam fructose to activele speran b. Prostate gland 2) helpt make monte 2) white milky fluid that matres the semen into a buffer c. Bulbourethral gland lines of to the urinary bladder lubricates urethra & tip of penis 3) inferior to prostate glant 2) alholine Huid & puers to elevate plt. 22. List the 3 regions of the Male Urethra. a. prostatic urethra b. membranous urethra a penile urethra/spangy urethra 23. Name the 2 types of Erectile tissue within the Penis (in the notes, it says "3 masses" but two of those masses are paired together). a. Corpora cavtinosa b. Corpus spongiosun-surrounds the spongy urethim 24. In males, what are the specific functions of FSH and LH? a. FSH: promites spermatogenesis b. LH: premotes secit fien of testosteront 25. List 3 functions of Testosterone (besides Spermatogenesis/sperm production). a. made sex choincteristics (facial hair growth thick muscles & bonos, etc.) b. Spermatogenesis a metabolism