Anatomy and Physiology II Chapters 27-29 TEST YOUR KNOWLEDG YOU DO NOT TURN THES

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Anatomy and Physiology II Chapters 27-29 TEST YOUR KNOWLEDG YOU DO NOT TURN THESE QUESTIONS IN FOR A GRADE I. The dartos and cremaster museles are important to the integrity of the male reproductive system. What role do they play? 2. Fertilization generally occurs in the 3. List the characteristics of mature sperm 4. The cells that produce testosterone in the testis are called 5. List the functions of Sertoli/sustenacular cells 6. What mechanism divides the testes into lobules? 7. What are the similarities and differences in spermatogenesis and oogenesis? 8. List and define each area/part of the uterine tube. mone involved in the ovarian cycle influences the events of the ovarian cycle and when each is secreted (and by what structure or structures). Hormones: (GnRH, FSH, LH 10. List the sexually transmitted diseases caused by bacteria and those caused by vinuses. 11. Whic h phases and processes of the monthly reproductive cycle of the female (ovarian and uterine) occur 12. Define primary follicle, secondary follicle, and Graffian/vesicular follicle. 13. When does an oocyte complete the second meiotic division? 14. List the female homologues of the scrotum, ventral penis, and bulbourethral glands. the scroe 15. List the characteristics of each of the male accessory glands. 16. A boy who has not passed through puberty sustains an injury to his anterior pituitary such that FSH is no longer released, but LH is normal. After he grows to maturity, what would you expect in terms of fertility and ability to perform sexually? What if FSH is released but not LH? 17. Define the two types of erectile tissue in the male. 18. List and define the three layers of the uterus. 19. Describe the processes involved in sperm penetration. How does the female reproductive system prevent polyspermy? (Include penetration through corona radiata and zona pellucida, role of acrosomal enzymes, and blocks to polyspermy 20. What hormone controls the release of anterior pituitarty gonadotropins? lantation takes aboutdays and is usually completed by the day after ovulation. k ejection or let-down is stimulated by which of the following hormones associated with pregnancy 23. Estrogen and progesterone maintain the integrity of the uterine lining and prepare the mammary glands to secrete milk. What structure makes this possible during the first three months of pregnancy? 24. The formation of the three germ layers occurs at 25. List substances carried from the mother to the fetus by the umbilical vein. List substances carried from the fetus to the mother by the umbilical arteries. 26. The placenta, a vitally important metabolic organ, is made up of a contribution from the mother and the fetus. Which portion is from the fetus? 27. The correct sequence of preembryonic structures ir_ 28. List the signs of a newborn's physical condition that form the Apgar score. 29. Initially, the implanted embryo obtains its nutrition by 30. List the factors that promote the onset of labor. . (Start with zygote.) 31. List the factors that prevent sperm from reaching the ovum. What must happen to the sperm after entering the female before it can fertilize the egg? How long can sperm stay viable once inside the female reproductive system? How long is an ovum viable once ovulated? fthe e aens

Explanation / Answer

Answering First Four Questions as per chegg guidelines

Ans 1-

Dartos and cremaster muscles works coordinately and regulates the temparature of testes. which promotes spermatogenesis. they do it by expanding or contracting scrotal skin

dartos is responsible for high degree of mobility of penile skin over the underlying tissue. responsible for blood supply of penile skin.

Ans2-- fallopian tube is where fertilization occurs.

ANS--3-- Mature sperm has two distinguishable parts 1. head 2. tail

HEAD- flattened, almond shaped, 4-5micrometres long 2-3 micrometres wide, head portion is mainly a cell nucleus, whic contains chromosomes. Covering of head is done by an acrosome, which contains an enzyme that helps sperm to come in contact with ovum.

middle part of sperm contains mitochondria.

TAIL- Slender, connects to middle part of sperm, 50 micrometres long, near mitochondria it is 1 micrometre wide and at end 0.5 micrometre. helps in sperm movement

Ans4-- Leydig Cells or Interstitial Cells of leydig Produces testosterone during Presence of LH

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