EBK HUMAN ANATOMY
9th Edition
ISBN: 9780134424828
Author: Nath
Publisher: YUZU
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Textbook Question
Chapter 27, Problem 3RFT
Match each numbered item with the most closely related lettered item.
mammary alands........
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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.
The 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.
The 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.
Chapter 27 Solutions
EBK HUMAN ANATOMY
Ch. 27 - Match each numbered item with the most closely...Ch. 27 - Match each numbered item with the most closely...Ch. 27 - Match each numbered item with the most closely...Ch. 27 - Prob. 4RFTCh. 27 - Prob. 5RFTCh. 27 - Prob. 6RFTCh. 27 - Prob. 7RFTCh. 27 - Prob. 8RFTCh. 27 - Prob. 9RFTCh. 27 - Match each numbered item with the most closely...
Ch. 27 - Identify the principal structures of the male...Ch. 27 - The reproductive system includes (a) gonads and...Ch. 27 - Accessory organs of the male reproductive system...Ch. 27 - Sperm production occurs in the (a) ductus...Ch. 27 - Prob. 15RFTCh. 27 - Prob. 16RFTCh. 27 - The structure that transports the ovum to the...Ch. 27 - 18. Which of the following is not a supporting...Ch. 27 - During the proliferative phase of the menstrual...Ch. 27 - 1. How will penile function be altered if the...Ch. 27 - What will happen to the function of the male...Ch. 27 - 3. In some cases, a tumor of the breast can be...Ch. 27 - Prob. 4RCCh. 27 - Prob. 5RCCh. 27 - Prob. 6RCCh. 27 - Prob. 7RCCh. 27 - Menstruation results in the loss of which layer of...Ch. 27 - When does descent of the testes normally begin?Ch. 27 - 1. Jerry is in an automobile accident that severs...Ch. 27 - In a condition known as endometriosis, endometrial...Ch. 27 - Women are much more susceptible than men to both...
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- The..........is a hollow ball of cells that develops from the morula. a) Blastocyst b) Oviduct c) Ovary d) Chorionarrow_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_forwardIn females, meiosis is not completed (a) until birth. (b) until puberty. (c) until fertilization occurs. (d) until ovulation occurs.arrow_forward
- what structure contains enzymes needed by sperm to penetrate an oocyte?arrow_forwardMeiosis 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_forwardWhat would likely occur if the cilia in the uterine tube were paralyzed during the time of ovulation?arrow_forward
- (a) Compare the amount of cytoplasm and number of organelles in ova to that in sperm. (b) Explain why this difference is important to their function.arrow_forwardWhat are the femalepronucleus and the malepronucleus?arrow_forwardReproductive 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 correctarrow_forward
- 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 mitochondriaarrow_forwarda. How many spermatozoa does one secondary spermatocyte produce? b. Where in zygote does the first cleavage division occur?arrow_forwardWhat is the vernix caseosa of the fetus? What purpose does it serve?arrow_forward
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