Biology: Concepts and Investigations
5th Edition
ISBN: 9781260259049
Author: Hoefnagels
Publisher: MCG
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Question
Chapter 35, Problem 12WIO
Summary Introduction
To determine:
The reason for pre-embryo needs corpus luteum.
Introduction:
The reproductive systems of males and females are composed of gonads that contain germ cells that form gametes. Spermatogenesis is the process of production of sperm cells in males and oogenesis is the process of the formation of eggs in females.
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Students have asked these similar questions
If the ovum is not fertilized, the corpus luteum regresses, and the endometrium sloughs off to result in the first day of menstrual bleeding. The latter event would be duplicated, even if fertilization occurred, if receptors for which of the following hormones were occupied by an antagonist?
A) Dehydroepiandrosterone
B) Estradiol
C ) Estriol
D) Estrone
E) Progesterone
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
Describe the development of reproductive organs in a fetus of each gender. Which
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related hormones are circulating in high concentrations in a pregnant woman
compared to a nonpregnant woman? Do these hormones cross the placenta (if you
are uncertain, consider hormone chemical class relative to membrane permeability to
make an educated guess)? Assuming these hormones do cross the placenta, how do
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Chapter 35 Solutions
Biology: Concepts and Investigations
Ch. 35.1 - Prob. 1MCCh. 35.1 - Prob. 2MCCh. 35.1 - Prob. 3MCCh. 35.2 - Prob. 1MCCh. 35.2 - Prob. 2MCCh. 35.2 - Prob. 3MCCh. 35.2 - Prob. 4MCCh. 35.3 - Prob. 1MCCh. 35.3 - Prob. 2MCCh. 35.3 - How do hormones regulate the ovarian and menstrual...
Ch. 35.4 - Prob. 1MCCh. 35.4 - Prob. 2MCCh. 35.4 - Prob. 3MCCh. 35.5 - What are the events of fertilization?Ch. 35.5 - What are the relationships among the zygote,...Ch. 35.5 - What is implantation, and when does it occur?Ch. 35.5 - Prob. 4MCCh. 35.5 - Prob. 5MCCh. 35.5 - What are the events of the second and third...Ch. 35.5 - Prob. 7MCCh. 35.6 - Prob. 1MCCh. 35.6 - Prob. 2MCCh. 35.6 - Prob. 3MCCh. 35.7 - Prob. 1MCCh. 35.7 - Prob. 2MCCh. 35 - Prob. 1MCQCh. 35 - Which hormones play central roles in both male and...Ch. 35 - Prob. 3MCQCh. 35 - Why can't a fertilized polar body develop into a...Ch. 35 - Prob. 5MCQCh. 35 - Prob. 6MCQCh. 35 - What is the correct order of structures to develop...Ch. 35 - A chemical that can cause a birth defect is a a....Ch. 35 - Prob. 1WIOCh. 35 - Prob. 2WIOCh. 35 - Prob. 3WIOCh. 35 - Prob. 4WIOCh. 35 - Prob. 5WIOCh. 35 - Prob. 6WIOCh. 35 - Is each of the following cell types haploid or...Ch. 35 - Prob. 8WIOCh. 35 - Prob. 9WIOCh. 35 - What would happen if two sperm fertilized the same...Ch. 35 - Prob. 11WIOCh. 35 - Prob. 12WIOCh. 35 - Prob. 13WIOCh. 35 - Prob. 14WIOCh. 35 - Prob. 15WIOCh. 35 - Prob. 16WIOCh. 35 - Prob. 17WIOCh. 35 - Prob. 18WIOCh. 35 - Prob. 19WIOCh. 35 - Review the Survey the Landscape figure in the...Ch. 35 - Add ovulation to the concept map. What hormonal...Ch. 35 - Add the terms placenta, follicle, polar body,...
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Similar questions
- Why does corpus luteum stay active throughout pregnancy and in the absence of fertilization, is active only for 10-12 days?arrow_forwardDescribe the events of fertilization. Where doesfertilization occur?arrow_forwardWhich of the following is TRUE about the mechanism of sex determination? A) The product of the SRY gene converts the bipotential gonads into testes. B) The development of an ovary is conditioned by the presence of two X chromosomes. (C) Testosterone promotes the degeneration of the Mullerian duct. D. The ovary produces a Wolffian inhibition factor that causes the Wolffian duct to degenerate. E) The "feminization" of accessory sex orgarts is promoted by the ovary.arrow_forward
- What is this condition that results if the fertilized egg fails to descend down to the uterus?arrow_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_forwardAfter fertilization the blastocyst develops three germ layers. Which germ layer is the innermost layer?arrow_forward
- Describe the development of an oocyte from primordial follicle to when it is released at ovulation. How do hormones contribute to this progression? Describe the development of a spermatogonia to a spermatozoa. How do hormones contribute to this progression? What is the function of Sertoli and Leydig cells?arrow_forwardWhat happens if an oocyte combines with sperm? Describe the processes involved in implantation. Mention what is occurring, where it is occurring, and any significant hormones involved. How does the zygote make its way through the uterine tube? Women who smoke cigarettes have an increased risk of ectopic pregnancy because the chemicals they absorb paralyze cilia all through the body. Explain.arrow_forwardWhich of the following is required for successful fetal development after the egg has been fertilized? a) That the corpus luteum remains throughout the pregnancy b) Production of estrogen (estradiol) and progesterone from the placenta c) Release of hCG (human chorionic gonatotropin) from the placentaarrow_forward
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