Human Biology: Concepts and Current Issues (8th Edition)
8th Edition
ISBN: 9780134042435
Author: Michael D. Johnson
Publisher: PEARSON
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Chapter 16, Problem 4TY
Summary Introduction
Introduction:
Ovulation is a process that occurs in the female body in the reproductive system. It is a process in which rupture of Graafian follicle and release of secondary oocyte along with polar bodies occur. Maturation of primary oocyte takes place inside Graafian follicle.
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During the first trimester, hCG produced from the chorion maintains the corpus luteum. What is the purpose of maintaining the corpus luteum?
Select one:
a. The corpus luteum produces relaxin, which thickens the endometrium.
b. The corpus luteum ensures that the endometrium does not break down during the first trimester.
c. The corpus luteum supports the formation of the placenta.
d. The chorion forms the fetal part of the placenta, and the corpus luteum supports the maternal part of the placenta.
Which of the following statements about oocytes and ovulation is correct? a. The production of primary oocytes continues in women from the onset of puberty until the onset of menopause. b. Meiotic divisions are complete at the time of ovulation. c. At ovulation, the structure released from the follicle includes a secondary oocyte and polar body. d. All of these statements are correct
Which of the following statements does NOT correctly describe the events following fertilization?
Select one:
a. Only the inner cell mass cells in a blastocyst are pluripotent.
b. The trophoblast has an important role in maintaining the pregnancy, as it prevents the endometrium from shedding.
c. As hCG takes over maintaining the endometrium immediately after implantation, the corpus luteum degenerates into the corpus albican.
d. All 16 cells in a morula are truly totipotent, meaning that they can become any cells in the human body.
Chapter 16 Solutions
Human Biology: Concepts and Current Issues (8th Edition)
Ch. 16 - Prob. 1QCCh. 16 - Prob. 2QCCh. 16 -
3. Would you be willing to select an embryo to...Ch. 16 -
1. Name the three accessory glands of the male...Ch. 16 - Prob. 2CRCh. 16 - Explain where fertilization takes place in the...Ch. 16 - Describe the phases of the uterine cycle.Ch. 16 - Prob. 5CRCh. 16 - Prob. 6CRCh. 16 - Describe how IVF is done.
Ch. 16 - Prob. 8CRCh. 16 - Describe birth control options, and list those...Ch. 16 - Describe the various STDs of worldwide concern.Ch. 16 - Prob. 1TYCh. 16 - Prob. 2TYCh. 16 - Which of the following structures is correctly...Ch. 16 - Prob. 4TYCh. 16 - Which of the following would provide the most...Ch. 16 -
6. What is the role of the corpus luteum during...Ch. 16 - Which of the following lists the female...Ch. 16 - Prob. 8TYCh. 16 - Which two means of birth control are most similar...Ch. 16 -
10. The most widely used hormonal methods of...Ch. 16 - Prob. 11TYCh. 16 - Prob. 12TYCh. 16 - Prob. 13TYCh. 16 - Prob. 14TYCh. 16 - Prob. 15TYCh. 16 - Male sexual responsiveness and secondary sex...Ch. 16 - What keeps the ovarian and uterine cycles always...Ch. 16 - Prob. 3AWKCh. 16 - What provides the force that pushes the baby out...Ch. 16 - Both women and men can have an STD and not have...Ch. 16 - If a woman does not have an intact hymen does that...
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- Which of the following statement does NOT describe the event that occurs if the ovum is not fertilized? Select one: A. Progesterone maintains the endometrium for the zygote. B. Low level of progesterone results in menstruation. C. The corpus luteum degenerates and stops producing estrogen and progesterone. D. GnRH, FSH, and LH levels begin to increase.arrow_forwardWhich of the following statements about the menstrual cycle is false? a. Progesterone levels rise during the luteal phase of the ovarian cycle and the secretory phase of the uterine cycle. b. Menstruation occurs just after LH and FSH levels peak. c. Menstruation occurs after progesterone levels drop. d. Estrogen levels rise before ovulation, while progesterone levels rise after.arrow_forwardOogenesis involves germ cells in the ovary undergoing meiosis to produce a functional ovum at the end of the process.Which of the following cells is penetrated by a sperm cell during the process of fertilization? Select one: a. Secondary oocyte b. Oogonia c. Primary oocyte d. Ovumarrow_forward
- Which of the following embryological events is involved in the formation of the ovarian follicles? a. Development of a genital tubercle in the cranial and the cloacal membrane b. Differentiation of the endoderm of the urogenital sinus c. Formation of longitudinal invaginations along the lateral aspect of the mesonephros d. Innervation of the ovary by neural crest cells e. Migration of the primordial germ cells from the yolk sacarrow_forwardWhich of the following statements does NOT describe the events that occur if the ovum is not fertilized? Select one: a. The corpus luteum degenerates and stops producing estrogen and progesterone. b. GnRH, FSH, and LH levels begin to increase. c. Progesterone maintains the endometrium for the zygote. d. Low levels of progesterone result in menstruation.arrow_forwardWhich of the following is not an event of the ovarian cycle?a. FSH promotes the development of a follicle.b. The endometrium thickens.c. The corpus luteum secretes progesterone.d. Ovulation of an egg occurs.arrow_forward
- Which of the following rows correctly identifies the locations of fertilization and the development of the fertilized ovum? Select one: a. Fertilization Development of the fertilized ovum Fallopian tube Uterus b. Fertilization Development of the fertilized ovum Ovary Uterus c. Fertilization Development of the fertilized ovum Fimbriae Endometrium d. Fertilization Development of the fertilized ovum Uterus Endometriumarrow_forwardWhich of the following is not a mechanism on how contraceptive pills work to prevent pregnancy? A. thinning the endometrium to prevent implantation B. inhibition of follicular development and suppression of ovulation C. progesterone inhibits the sperm from penetrating through the cervix and female upper tract by making the cervical mucus unfriendly D. stimulates the production of high testosterone levelsarrow_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_forward
- Which of the following is a major difference between spermatogenesis and oogenesis? a. Spermatogenesis involves meiosis, and oogenesis involves mitosis. b. Spermatogenesis is continuous, but oogenesis is variable. c. Spermatogenesis produces fewer gametes per precursor cell than oogenesis. d. All of these are significant differences between oogenesis and spermatogenesis.arrow_forwardHow do tubal ligations and vasectomies prevent further pregnancies? Select one: a. The corpus luteum and the epididymis are suppressed using a chemical swab. The fertilized egg could no longer implant in the endometrium. b. The Fallopian tubes and vas deferens are cut and tied off, thereby preventing the movement of the eggs and sperm. c. The Fallopian tubes and the vas deferens are cut. Eggs and sperm can no longer be produced. d. The Fallopian tube and vas deferens are cut and tied off, thereby reducing needed reproductive hormone levels.arrow_forwardAt the end of the uterine cycle, there is a significant drop in the level of LH, estrogen, and progesterone. This causes all of the following EXCEPT Select one: A. The maintenance of the corpus luteum to continue producing low levels of progesterone and estrogen. B. The start of menstruation, which breaks down the blood vessels and tissues formed during the follicular stage. C. Negative feedback loop to the pituitary to secrete more FSH and LH. D. An increase in smooth muscle contractions of the uterus.arrow_forward
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