Which of the following statements regarding spermatogenesis is false?
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EBK HUMAN PHYSIOLOGY
- Which of the following statements does NOT correctly describe the similarities and differences between male and female reproductive systems? Select one: a. Millions of mature sperm are produced on a daily basis, whereas single mature ovum is released every 28 days. b. Meiosis is completed in eggs after fertilization begins, whereas a mature sperm has completed meiosis prior to fertilization. c. Eggs and sperm contain exactly half of the genetic material of a normal somatic cell. Many zygotes with an abnormal number of genetic material often do not successfully implant. d. Eggs and sperm can survive for 3 to 5 days in the Fallopian tubes.arrow_forwardWhich of the following structure is controlling the rate of spermatogenesis? a.Sertoli cells b.Leydig cells c.Spermatogonium d.Spermatidsarrow_forwardWhich of the following statement correctly describe the role of androgen in the male reproductive system? Select one: A. LH stimulates the Sertoli cell to produce inhibin and to start spermatogenesis. B. Increased levels of inhibin released by the interstitial cells result in lower levels of FSH and testosterone. C. Increased levels of testosterone feedbacks negatively to the anterior pituitary and hypothalamus. D. GnRH is released by the anterior pituitary and stimulates the release of FSH and LH.arrow_forward
- Which of the following statements does NOT correctly describe the role of inhibin in the male reproductive system? Select one: a. Increased levels of inhibin suppress the production of follicle stimulating hormone. b. Low levels of inhibin result in decreased production of sperm. c. Sertoli cells produce sperm and secrete inhibin. d. Inhibin decreases the production of sperm.arrow_forwardWhich of the following does NOT correctly describe the role of inhibin in the male reproductive system? Select one: A. Sertoli cells produce sperm and secrete inhibin. B. Low levels of inhibin result in decreased production of sperm. C. Inibin decreases the production of sperm. D. Increased Level of inhibin suppress the production of follicle-stimulating hormonesarrow_forwardWhich of the following statements about spermatogenesis is true? Select one: A. The process starts after each ejaculation. B. Maturation of sperm takes place in the seminal vesicles. C. The process is initiated by primary spermatocytes. D. It is controlled by FSH and testosterone. E. The complete process takes about 28 days. O O Oarrow_forward
- Which of the following statements does NOT describe the role of progesterone in the female reproductive system? Select one: a. Prevents smooth muscle contraction, thereby preventing premature birth b. Triggers the thickening of the endometrium c. Ensures that the endometrium is thick enough to support a fetilized egg d. Prevents the shedding of the endometriumarrow_forwardWhich of the following statements is NOT a role of follicle stimulating hormone (FSH) in the male reproductive system? a. It is suppressed by increased levels of testosterone and inhibin. b. It stimulates the Sertoli cells to produce sperm. c. It increases the production of inhibin. d. It stimulates a primary follicle to develop.arrow_forwardWhich of the following statements does NOT describe the role of progesterone in the female reproductive system? a. Triggers the release of the ovum b. Prevents smooth muscle contraction, thereby preventing premature birth c. Prevents the shedding of the endometrium d. Ensures that the endometrium is thick enough to support a fetilized eggarrow_forward
- The diagram in Figure 1 shows a section through the mammalian testis. With reference to this diagram answer the following questions: FIGURE 1 (a) What percentage of each of the following types of cells would you expect to contain an X chromosome. Give a REASON for your answer in each case. i) type cell A ii) type cell B (b)Name the cell type labelled B which under goes mitosis. State the importance of mitosis in a mature testis.arrow_forwardWhich of the following statements is/are true? A. Spermatogenesis is an example of asymmetric cell division. B. The formation of a mature egg occurs through symmetric cell division. C. Spermatogenesis and oogenesis are both examples of asymmetric cell division. D. Spermatogenesis involves only symmetric cell division whereas oogenesis involves asymmetric cell division.arrow_forwardWhich of the following statement does NOT describe the role of progesterone in the female reproductive system? Select one: A. Prevent the shedding of the endometrium B. Ensures that the endometrium is thick enough to support a fertilized egg C. Trigger the thickening of the endometrium D. Prevent smooth muscle construction, thereby preventing premature birtharrow_forward
- Human Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage Learning