Pearson eText Fundamentals of Anatomy & Physiology -- Instant Access (Pearson+)
11th Edition
ISBN: 9780136874089
Author: Frederic Martini, Judi Nath
Publisher: PEARSON+
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Textbook Question
Chapter 28, Problem 3RQ
In females, meiosis II is not completed until (a) birth, (b) puberty, (c) fertilization occurs, (d) uterine implantation occurs.
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Reproductive physiology (human)
a) At the time of ovulation, the released ovum (egg) has completed both meiosis I and meiosis II.
b) Because the corpus luteum (CL) is rescued from atresia by hCG early in pregnancy, the CL continues to produce progesterone throughout the 9 months of a normal pregnancy.
c) Late in the follicular phase, estrogen participates in a positive feedback loop that leads to a surge in luteinizing hormone and ovulation.
d) Both (a) and (b) are correct and (c) is incorrect
e) Statements (a), (b) and (c) are all correct
Spermatogenesis and oogenesis both involve meiosis but differ in significant ways. One of those differences include what?
A) Cytokinesis is unequal in spermatogenesis
B) Production of sperm is continuous; in humans, and the number of future egg cells is set at birth
C) Oogenesis is an uninterrupted sequence, but there are long delays in spermatogenesis
D) All of the above
Why is a second polar body expelled after fertilisation? a) To remove excess cytoplasm b) Because the oocyte must reactivate the incomplete meiosis before fusing with the sperm c) Before fusion with the sperm it must complete mitosis d) The fertilised oocyte is not a haploid cell until it expels the sperms mitochondria
Chapter 28 Solutions
Pearson eText Fundamentals of Anatomy & Physiology -- Instant Access (Pearson+)
Ch. 28 - Define gamete.Ch. 28 - List the basic structures of the reproductive...Ch. 28 - Define gonads.Ch. 28 - Name the male reproductive structures.Ch. 28 - Prob. 5CPCh. 28 - Trace the pathway that a sperm travels from the...Ch. 28 - What effect would a low FSH level have on sperm...Ch. 28 - Prob. 8CPCh. 28 - Prob. 9CPCh. 28 - Prob. 10CP
Ch. 28 - Prob. 11CPCh. 28 - Prob. 12CPCh. 28 - Prob. 13CPCh. 28 - Prob. 14CPCh. 28 - What event in the uterine cycle occurs when the...Ch. 28 - Prob. 16CPCh. 28 - Prob. 17CPCh. 28 - Prob. 18CPCh. 28 - Prob. 19CPCh. 28 - What structure in a sexually indifferent embryo...Ch. 28 - Prob. 21CPCh. 28 - Define menopause.Ch. 28 - Why does the level of FSH increase and remain high...Ch. 28 - Describe the interaction between the reproductive...Ch. 28 - Describe the interaction between the reproductive...Ch. 28 - Prob. 1RQCh. 28 - The ovaries are responsible tor (a) the production...Ch. 28 - In females, meiosis II is not completed until (a)...Ch. 28 - A sudden surge in LH secretion causes the (a)...Ch. 28 - The main hormone of the postovulatory phase is (a)...Ch. 28 - Prob. 6RQCh. 28 - Prob. 7RQCh. 28 - Prob. 8RQCh. 28 - Prob. 9RQCh. 28 - Prob. 10RQCh. 28 - Prob. 11RQCh. 28 - Prob. 12RQCh. 28 - Trace the path of milk flow from its site of...Ch. 28 - Prob. 14RQCh. 28 - Prob. 15RQCh. 28 - Prob. 16RQCh. 28 - What are the main differences in gamete production...Ch. 28 - Prob. 18RQCh. 28 - Describe each of the three phases of a typical...Ch. 28 - Prob. 20RQCh. 28 - Prob. 21RQCh. 28 - Prob. 22RQCh. 28 - Prob. 23RQCh. 28 - Diane has peritonitis (an inflammation of the...Ch. 28 - Prob. 25RQCh. 28 - Birth control pills contain estradiol and...Ch. 28 - Female bodybuilders and women with eating...Ch. 28 - Prob. 1CCCh. 28 - When should Susan expect ovulation to occur during...
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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
- In human spermatogenesis, mitosis of a stem cell gives rise to one cell that remains a stem cell and one cell that becomes a spermatogonium. (a) Draw four rounds of mitosis for a stem cell, and label the daughter cells. (b) For one spermatogonium, draw the cells it would produce from one round of mitosis followed by meiosis. Label the cells, and label mitosis and meiosis. (c) Explain what would happen if stem cells divided like spermatogonia.arrow_forwardMeiosis II of spermatogenesis yields a) Primary spermatocyces c) Spermatogonia d) Spežmatids 田 e) spermatozoaarrow_forwardThe secondary oocyte leaving the ovarian follicle is in, (a) interphase. (b) metaphase of the first meiotic division. (c) telophase of the second meiotic division. (d) metaphase of the second meiotic division.arrow_forward
- What stimulates the completion of meiosis Il in a secondary oocyte? O a) A surge of Follicle-Stimulating Hormone (FSH) following the degeneration of the corpus luteum O b) A surge of Luteinising Hormone (LH) on day 13 of the menstrual cycle O) Sperm-egg binding at fertilisation d) Sperm-zona pellucida binding at fertilisationarrow_forwardThe secondary oocyte leaving the follicle is in (a) interphase. (b) metaphase of the first meiotic division. (c) telophase of the second meiotic division. (d) metaphase of the second meiotic division.arrow_forwardThe term morula is used for a solid cluster of cells generated by the cleavage of the zygote. This cluster is made up of (a) 4–8 cells, (b) 8–12 cells, (c) 12–16 cells, (d) 60–80 cells.arrow_forward
- Meiosis in males produces four spermatids, each of which contains: (a) 23 chromosomes. (b) 23 pairs of chromosomes. (c) the diploid number of chromosomes. (d) 46 pairs of chromosomes.arrow_forwardSperm need to be deposited in the vagina close to the time of ovulation because… a) Fertilisation needs to occur in the uterus b) The probability of fertilisation occurring in humans is about 25% c) The fusion of male and female gametes is the beginning of embryonic development d) Sperm and ovum are viable for a short time onlyarrow_forwardFor which of the following is the number the same in humanmales and females?(A) interruptions in meiotic divisions(B) functional gametes produced by meiosis(C) meiotic divisions required to produce each gamete(D) different cell types produced by meiosisarrow_forward
- During oogenesis, meiosis results in:A) four equally sized cells that stop dividing in meiosis 1B) 2 equally sized cells, but only one that is typically fertilizedC) 2 equally sized cells that are both typically fertilizedD) 2 or 3 small cells and one large cell that develops further if fertilizedarrow_forwardAn oophorectomized monkey is treated with high doses of estrogen. Which of the following changes is most likely to occur in the endometrium after 1 year of treatment? (A) Atrophy B Hyperplasia (C) Hypertrophy (D) Hypoplasia (E) Metaplasiaarrow_forwardWhich of the following cells are haploid? (a) (b) spermatogonium ova (c) (d) oogonium somatic cellarrow_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