Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Chapter 51, Problem 5TY
Summary Introduction
Introduction: Fertilization is the process in which two gametes, one from the male and the other from the female, fuse together to produce an undifferentiated diploid cell called zygote. The male gamete is called sperm and the female gamete is called ovum or egg. In mammals, the sperm fertilizes the ovum inside the body of the mother and this type of fertilization is called internal fertilization.
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Chapter 51 Solutions
Biology
Ch. 51.1 - CoreSKILL How did Paland and Lynch test the...Ch. 51.1 - CoreSKILL Approximately how many times more often...Ch. 51.1 - Prob. 3EQCh. 51.3 - Prob. 1CSCh. 51.4 - Prob. 1CSCh. 51.4 - Prob. 2CSCh. 51.4 - Prob. 1CCCh. 51 - Prob. 1TYCh. 51 - Which is considered an advantage of sexual...Ch. 51 - Prob. 3TY
Ch. 51 - Prob. 4TYCh. 51 - Prob. 5TYCh. 51 - Prob. 6TYCh. 51 - A major function of FSH is to a. stimulate the...Ch. 51 - During the human ovarian cycle, ovulation is...Ch. 51 - Prob. 9TYCh. 51 - Prob. 10TYCh. 51 - Prob. 1CQCh. 51 - Prob. 2CQCh. 51 - Prob. 3CQCh. 51 - Prob. 1COQCh. 51 - Describe the events of the ovarian and uterine...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which statement is accurate about the ovarian cycle? a. GnRH inhibits the anterior pituitary from secreting FSH and LH. b. Progesterone stimulates the follicle cells to mature. c. Estrogen production ceases when the secondary oocyte is ovulated. d. High levels of estrogen stimulate the anterior pituitary to secrete FSH and LH.arrow_forwardFigure 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.arrow_forwardWhich 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_forward
- Which description below explains how the hormones released in birth control pills causes natural ovulation to cease? Select one: a. Birth control pills release estrogen. Estrogen controls the secondary sex characteristics of the female body. b. Birth control pills release progesterone. Progesterone feeds back to the pituitary gland, thereby inhibiting FSH and LH and in effect, stopping the ovarian and menstrual cycle. c. Birth control pills release progesterone. Progesterone causes an increase in FSH, thereby increasing the production of follicles. d. Birth control pills release estrogen. Estrogen feeds back to the posterior pituitary, causing an increase of LH and thereby ceasing the ovarian cycle.arrow_forwardIs this true or false? a. Fertilization is followed by a cleavage, a period of rapid cell division without growth. b. From the process above, this results in the production of a large number of cells called blastomeres. c. In sexual reproduction, the offspring have the same combinations of genes as their parents. d. Sequential hermaphroditism occurs when an animal is one sex during one phase of its lifecycle and the opposite sex during another phasearrow_forwardWhy do estrogen levels fall after menopause?a. The ovaries degrade.b. There are no follicles left to produce estrogen.c. The pituitary secretes a menopause-specific hormone.d. The cells of the endometrium degenerate.arrow_forward
- Refer to the diagram below 1. How long is one menstrual cycle? 2. On which day of the menstrual cycle does the period start? 3. On which day of the menstrual cycle is an egg released from the ovary? 4. What happens to the lining of the uterus if an egg is not fertilised? 5. Does a woman have periods while she is pregnant? Explain your answer. 6. How long does a period usually last in the 28-day cycle? 7. If an egg was released from the left ovary on the 2ndMarch, when would the next egg be released from the right ovary? 8. If a woman has a period which begins on the 1st January, when will her next period begin? 9. An egg can survive for up to 3 days after it is released (up to day 17). Sperm can survive up to 8 days inside the woman. Susie want to have a baby. She has a cycle exactly like on the diagram. On which days is she most fertile (most likely to get pregnant)?arrow_forwardWhich is the most correct sequence of sperm flow in the male duct system?A.Seminiferous tubules, vas deferens, ejaculatory duct, ampulla, urethra B.Seminiferous tubules, prostatic urethra, vas deferens, ejaculatory duct, ampulla C.Testes, epididymis, ductus deferens, urethra, seminal vesicle D.Seminiferous tubules, epididymis, vas deferens, ampulla, ejaculatory duct, urethra E.Testes, ductus deferens, urethra, seminal vesiclearrow_forwardAfter a woman gives birth, what happens to her levels of estrogen, progesterone, and prolactin? a. Progesterone, estrogen, and prolactin levels all decrease. b. Progesterone and prolactin levels decrease, and estrogen levels increase. c. Progesterone, estrogen, and prolactin levels all increase. d. Estrogen and prolactin levels increase, and progesterone levels decrease.arrow_forward
- What is the function of the epididymis?a. sperm maturation and storage b. produces the bulk of seminal fluidc. provides nitric oxide needed for erectionsd. spermatogenesisarrow_forwardIn humans, implantation in the uterus occurs at whichstage of embryonic development?a. zygoteb. morulac. blastocystd. gastrulationarrow_forwardWhich germ layer is involved in the process of neurulation? Select one: a. Mesoderm b. Endoderm c. Embryonic disk d. Ectodermarrow_forward
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Embryology | Fertilization, Cleavage, Blastulation; Author: Ninja Nerd;https://www.youtube.com/watch?v=8-KF0rnhKTU;License: Standard YouTube License, CC-BY