Which of the following are stages in the ovarian cycle? Select all that apply. The primary oocyte completes meiosis I and divides unequally, forming a secondary oocyte and a polar body. The rupture of the main follicle releases a secondary oocyte coated with secreted protein and follicle cells. The oocyte enlarges and secretes a layer of proteins, and the cells around the oocyte divide repeatedly. 4 A corpus luteum develops from the follicle cells left behind after ovulation, and this structure breaks down if pregnancy does not occur. A fluid-filled cavity begins to form in the follicle's cell layer surrounding the primary oocyte.

Which of the following are stages in the ovarian cycle? Select all that apply. The primary oocyte completes meiosis I and divides unequally, forming a secondary oocyte and a polar body. The rupture of the main follicle releases a secondary oocyte coated with secreted protein and follicle cells. The oocyte enlarges and secretes a layer of proteins, and the cells around the oocyte divide repeatedly. 4 A corpus luteum develops from the follicle cells left behind after ovulation, and this structure breaks down if pregnancy does not occur. A fluid-filled cavity begins to form in the follicle's cell layer surrounding the primary oocyte.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter20: The Reproductive System

Section: Chapter Questions

Problem 14RE

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Figure 43.15 Which of the following statements about hormone regulation of the female reproductive cycle is false? LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. Both progesterone and estradiol are produced by the follicles. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.
Ovulation releases _________. a. the corpus luteum b. a primordial follicle c. a primary oocyte d. a secondary oocyte and first polar body
In the fertility awareness method of birth control, a woman gauges her monthly fertile period by monitoring changes in the consistency of her vaginal mucus. What kind of information does such a method provide about the likelihood of getting pregnant?
Figure 18.17 Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estrogen and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estrogen are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estrogen but stimulated by high levels of estrogen.
There are 6 major events in fertilization. Discuss the process of fertilization or conception, with emphasis on the sperm-egg interaction. Proteins on the sperm plasma membrane bind to ZP3 molecules within the zona pellucida of the egg. Why is this event important? Zona binding triggers the acrosome reaction, in which the sperm plasma membrane fuses with the outer acrosomal membrane, causing exocytosis of acrosomal contents. What is in the "acrosomal content"? Acrosomal enzymes begin to dissolve a hole in the zona pellucida. This enzymatic degradation, accompanied by rapid sperm tail beating, moves the sperm through the zona. Where does the sperm intend to reach?
Spermatogenesis is cyclic and exhibits spermatogenic wave inside the seminiferous tubules. Which of the following factor contribute to the spermatogenic cycle/wave? Retinoic acid signaling in the testis. AR levels in Sertoli cells. Activin and inhibin levels within the seminiferous tubule. Androgen receptor (AR) levels in Leydig and peritubular cells. Testosterone levels in the lumen of the seminiferous tubules.
Which of the following describes the role of Luteinizing hormone in the ovarian cycle? o Inhibits the hypothalamus from secreting GNRH o Directly promotes thickening of the endometrium o Simulates the ovary to increase aldosterone o Induces the corpus luteum to secrete progesterone Stimulates lactation in the mammary glands
The chance of successful fertilization is approximately 18% in every cycle. Why does this statistic seem so low? All of the following statements provide a reason as to why the chance of fertilization is only 18% for every ovarian cycle EXCEPT Select one: a. Some sperm cells are not very motile, while others are formed without a tail. b. There are two Fallopian tubes and two ovaries, but only one of them releases an ovum every cycle. c. If more than one sperm fertilize an egg, multiple embryos can result. d. The vagina is very acidic, killing many sperm cells.
Which of the following is true about Organogenesis? Choose all possible answers. anterior pituitary gland releases FSH and LH that drives ovarian development is the process by which mature female gametes, or ova, develop from germ cells. begins at puberty LH surge causes the oocyte to mature. After the secondary oocyte is released from the ovary, meiosis is completed.
Although the most effective forms of oral contraceptive for women contain estrogen and progestin, some birth control pills contain a small dose of progestin only. This is because there are many risks and side effects associated with estrogen.Which of the following statements is NOT a reason for using a progestin-only oral contraceptive? Select one: a. Progesterone suppresses the maturation of follicles, thereby preventing ovulation of a mature ovum. b. Progesterone maintains the corpus luteum as corpus luteum releases a large amount of progesterone and some estrogen. c. Progestin-only oral contraceptives prevent the production of FSH and LH in the anterior pituitary. d. Progesterone suppresses the production of GnRH in the hypothalamus.
Describe the development of an oocyte from primordial follicle to when it is released at ovulation. How do hormones contribute to this progression? Describe the development of a spermatogonia to a spermatozoa. How do hormones contribute to this progression? What is the function of Sertoli and Leydig cells?
There are 6 major events in fertilization. Discuss the process of fertilization or conception, with emphasis on the sperm-egg interaction. Egg-binding proteins on the sperm cell surface bind to molecules on the egg cell membrane. What happens to the chromosomes of the sperm and egg? The sperm cell membrane fuses with the egg plasma membrane, allowing the sperm nucleus and centriole to enter the egg cytoplasm. What is the purpose/role of the centriole during fertilization? The final event would be when the egg and sperm pronuclei migrate toward each other in preparation for syngamy. What is the purpose of reproduction?