EBK HUMAN ANATOMY
8th Edition
ISBN: 9780100799554
Author: Martini
Publisher: YUZU
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Chapter 28, Problem 12RFT
Summary Introduction
Introduction:
Amphimixis is defined as a process of fusion of gametes from two different organisms, which leads to the formation of zygote.
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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
Give the function of:(a) Corpus luteum(b) Endometrium
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.
Chapter 28 Solutions
EBK HUMAN ANATOMY
Ch. 28 - Match each numbered item with the most closely...Ch. 28 - Prob. 2RFTCh. 28 - Prob. 3RFTCh. 28 - Prob. 4RFTCh. 28 - Prob. 5RFTCh. 28 - Prob. 6RFTCh. 28 - Prob. 7RFTCh. 28 - Prob. 8RFTCh. 28 - Match each numbered item with the most closely...Ch. 28 - Prob. 10RFT
Ch. 28 - Identify the two extra-embryonic membranes and the...Ch. 28 - Prob. 12RFTCh. 28 - Prob. 13RFTCh. 28 - Prob. 14RFTCh. 28 - 15. A blastocyst is a(n)
(a) extra-embryonic...Ch. 28 - During the second trimester, the most significant...Ch. 28 - Prob. 17RFTCh. 28 - Prob. 18RFTCh. 28 - The extra-embryonic membrane that forms the...Ch. 28 - During implantation, the (a) syncytiotrophoblast...Ch. 28 - 1. What would be the fate of an embryo if the...Ch. 28 - Prob. 2RCCh. 28 - Prob. 3RCCh. 28 - Prob. 4RCCh. 28 - Prob. 5RCCh. 28 - Describe the effects of human chorionic...Ch. 28 - 7. What occurs during amphimixis?
Ch. 28 - Prob. 8RCCh. 28 - Prob. 9RCCh. 28 - Prob. 10RCCh. 28 - 1. Joe and Jane desperately want to have children,...Ch. 28 - 2. The virus that causes rubella, or "German...
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- Sperm 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_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_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_forward
- Distinguish the structures of the female reproductive system that (a) produce the egg, (b) transport the egg, (c) house a developing embryo, and (d) serve as the birth canal.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_forwardSperm generally can only enter the uterus from the vagina around the time of ovulation because… a) When oestrogens are elevated, the mucus in the cervix becomes non viscous allowing sperm penetration b) Elevated progesterone levels open the cervix allowing the sperm to enter c) The mucus in the cervix is normally thick and viscous allowing sperm to swim into the uterus d) The LH surge opens the cervix allowing the sperm to enterarrow_forward
- Gross Anatomy of the Human Male and Female Reproductive System a) Name the three layers of the uterine wall from the inside out. Which of these is sloughed during menses?_______ _ ___________________ Which contracts during childbirth? b) Describe the epithelium found in the uterine tube. c) Describe the arrangement of the layers of smooth muscle in the seminal gland.arrow_forwardThe photo shows follicles from a cat ovary A) Primordial B) Primary C) Graafian Label the parts of the follicles (oogonium, primary oocyte, secondary oocyte, follicular cell and antrum) PLEASE draw on EACH picture and use arrow to labelarrow_forwardHow does the oocyte prevent polyspermy? a) Changing the structure of the zona pellucida when a sperm fuses with the oocyte cell membrane b) Releasing enzymes, which destroy all other sperm c) Moving away from any surrounding sperm d) Shedding the zona pellucidaarrow_forward
- a. How many spermatozoa does one secondary spermatocyte produce? b. Where in zygote does the first cleavage division occur?arrow_forward10. In a genetic (XX) female,a) What is the broad ligament?b) What structures are within it?In a genetic (XY) male,c) What is the spermatic cord and what is its path? d) What structures are within it?arrow_forwarda.) When in the female life cycle are oocytes produced? b.) Which human hormone(s) are thought to trigger ovulation?arrow_forward
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