Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
10th Edition
ISBN: 9780321908599
Author: Frederic H. Martini, Judi L. Nath, Edwin F. Bartholomew
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
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
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
Chapter 28 Solutions
Fundamentals of Anatomy & Physiology Plus Mastering A&P with eText - Access Card Package (10th Edition) (New A&P Titles by Ric Martini and Judi Nath)
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. 9CPCh. 28 - Prob. 10CPCh. 28 - Prob. 11CP
Ch. 28 - Prob. 13CPCh. 28 - Prob. 12CPCh. 28 - Prob. 14CPCh. 28 - Prob. 15CPCh. 28 - What event in the uterine cycle occurs when the...Ch. 28 - Prob. 6CPCh. 28 - Prob. 17CPCh. 28 - Prob. 18CPCh. 28 - Prob. 19CPCh. 28 - Prob. 22CPCh. 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 - 1. What other structures in Dan's left spermatic...Ch. 28 - Prob. 2CC
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- Meiosis II of spermatogenesis yields a) Primary spermatocyces c) Spermatogonia d) Spežmatids 田 e) spermatozoaarrow_forwardWhat 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 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
- #8arrow_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_forwardDuring 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_forward
- An 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_forwardThe..........is a hollow ball of cells that develops from the morula. a) Blastocyst b) Oviduct c) Ovary d) Chorionarrow_forwardWhich of the following statements is incorrect? a) Sperm occur as X- or Y-chromosome bearing gametes b) The sex of an individual can not be determined from morphology early in embryonic development c) It is the ovum which determines the sex of the newly developing embryo d) X-chromosome bearing sperm are slightly larger than Y-chromosome bearing spermarrow_forward
- Which of the following cells are haploid? (a) (b) spermatogonium ova (c) (d) oogonium somatic cellarrow_forward90. The differentiation of the primitive gonads into testes or ovaries depends on the presence or absence of which of the following? A) Normal X chromosomes B) Normal Y chromosomes C) Synthesis of antimüllerian hormone D) Synthesis of estrogen by primordial germ cells E) Synthesis of testosterone by primary sex cord cellsarrow_forward62. Which of the following postovulatory events is most likely to be impaired by failure of the corpus luteum to develop? A) Fertilization B) First cleavage of the zygote C) Formation of the blastocyst D) Implantation E) Passage of the oocyte into the fallopian tubearrow_forward
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