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- Figure 43.8 Which of the following statements about the male reproductive system is false? The vas deferens carries sperm from the testes to the penis. Sperm mature in seminiferous tubules in the testes. Both the prostate and the bulbourethral glands produce components of the semen. The prostate gland is located in the testes.1)Compare and contrast hypovolemia and negative water balance including definition, causes, and possible outcomes. 2)Trace the path of a sperm cell from the site of its maturation to the site where it leaves the male body. Include descriptions of fluids added along that path. 3) Chronicle the events of the female sexual cycle including hormonal control with particular emphasis on the overlap and regulation of the ovarian and menstrual cycles. What are differences if fertilization does not take place vs. when a pregnancy intervenes?25. A 33-year-old man comes to the physician because he and his wife have been unable to conceive a child for the past 2 years. He is a research scientist who has been working on a male contraceptive drug that selectively impairs function of the seminiferous tubules without affecting Leydig cells. Laboratory studies show; Serum Testosterone 670 ng/dL (N=300-1200 ng/dL) 12 mIU/mL 45 mIU/mL no sperm seen Luteinizing hormone Follicle-stimulating hormone Semen analysis Decreased production of which of the following is most likely responsible for the increased serum concentration of follicle-stimulating hormone in this patient? A) Estradiol B) Inhibin C) Progesterone D) Prolactin E) Prostate-specific antigen F) Testosterone
- 7. Describe the sources, composition, characteristics, & functions of semen. A typical ejaculation discharges 2 to 5 ml of semen, composed of 10% 60% bulbourethral fluid. The usual sperm count in semen is does the prostrate contribute to semen? .30% and a trace of2. Fill in the missing terms in the following description of the menstrual cycle. The menstrual cycle is a _(1) day cycle of development of an egg in the _(3). (2) and changes in the in preparation for a possible pregnancy. All of this is controlled by changing hormone levels. One egg per month begins to develop due to the hormone _(4). being released from the (5) The ovary surrounding the developing egg then releases the hormone (6) _(8). that causes _(7) The releases the hormone (9) in large quantities and this causes _(10), the release of the egg. The empty follicle forms (11). that secretes the hormone a scar called the (12) that causes If the egg is fertilized on its way to the (13)_ that causes produces the hormone _(16)_ _(15)_ uterus, the _(14) If the egg is not fertilized, the lining of the uterus (endometrium) is shed as menstrual flow for about 5 days. 1. 28 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.deferens 14. 3 of the following are true of the accessory male genital glands A. Prostatic secretion serve to liquefy the coagulated semen upon deposition in the female genital tract B. Seminal vesicles contribute 70% of the human ejaculate C. Seminal vesicles may produce concretions that calcify in the elderly D. Bulbourethral glands lubricate the urethra prior to emission of semen 15. 2 of the following are true of the ovaries A. The primordial follicle is the basic reproductive unit B. The primary oocyte in the primary follicle us arrested at metaphase during Meiosis I C. The Primary oocyte that has not completed Meiosis I is kept in that state by Oocyte Maturation Inhibitors D. Follicular cells are attached to one another by tight junctions 16. 3 of the following are true of ovulation A. Upon ovulation the graafian follicle contains a secondary oocyte B. The first polar body is produced when the maturation promoting factor is secreted by primary oocyte C. Ovulation occurs in…
- 1. Discuss the hypothalamic-pituitary-ovarian axis and the physiologic basis for the interplay of the various hormones involved in the axis. 2. Give the phase of the menstrual cycle and correlate the histologic features seen in the: (a) Endometrium, (b) ovary1.) A male e-rection is maintained by filling of the spongy tissues in the p-enis with what fluid: 2.) The male s-perm are produced in the ________________________ (organ), then pass through the _____________________ into the _______________________ where they mature. 3.) The female gonads are the _____________________, but the fertilized egg implants In the _________________________.An infant with hydrocele is seen in the clinic for a follow-up visit at 1 month of age. The scrotum is smaller than it was at birth, but the fluid is still visible on illumination. Which of the following actions is the physician likely to recommend? A. Massaging the groin area twice a day until the fluid is gone. B. Referral to a surgeon for repair. C. No treatment is necessary; the fluid is reabsorbing normally. D. Keeping the infant in a flat, supine position until the fluid is gone.
- Understanding the causes of infertility can be valuablein developing new birth control methods. Cite a type ofcontraceptive based on each of the following causes of infertility:(a) failure to ovulate due to a hormonal imbalance;(b) a large fibroid tumor that disturbs the uterine lining;(c) endometrial tissue blocking uterine tubes;(d) low sperm count (too few sperm per ejaculate).11. Tube the carries sperm from epididymis to urethra during ejaculation. 12. Thick whitish fluid ejaculated from the penis (about 3.5 ml per ejaculation). Can contain as many as 400 million sperm plus secretions from the prostate, Cowper's and seminal vesicles 13. Cylindrical shaped organ that hangs in front of scrotum that functions in sexual intercourse. Increased blood flow causes it to become erect 14. Female gonads that produce eggs and the female sex hormones. About 3 cm by 1cm in size 15. Thick-walled muscular organ, shaped like an upside-down pear, when fetusdevelops. Normally about 5 cm wide. 16. Opening of uterus from vagina (joins vagina at nearly right angles). 17. Muscular tube with mucus-secreting lining; receives penis during intercourse and serves as a birth canal. 18. "Fallopian tubes" Cilia-lined tubes that transport eggs from ovaries to uterus.1. Describe the structure and function of the sperm cell 2. Identify the importance of testosterone in male reproductive function 3. 1. List the steps of oogenesis and spermatogenesis
