Biological Science (7th Edition)
Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 47, Problem 14PIAT
Summary Introduction

To analyze:

The pill’s effects on the normal hormonal function in the body in each of the following:

(a) Maturation of a follicle

(b) Thickening of the uterine lining during the follicular phase

(c) Probability of ovulation

(d) Volume of menstrual fluid

Introduction:

The FSH (follicle-stimulating hormone) is secreted by the anterior pituitary and regulates the pubertal maturation, growth, and development. It works along with LH (luteinizing hormone) in the reproductive system. The pill’s mechanism was confirmed by the scientists by measuring the plasma hormone levels before and after the use of the pill. Given below is a graph representing the different levels of progesterone at different pill concentrations. Single asterisk (*) signifies P < 0.05, double asterisks (&) signify P **lt; 0.01, and triple asterisks (&*) signify P **lt; 0.001.

Biological Science (7th Edition), Chapter 47, Problem 14PIAT

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Progesterone: 1)  Is produced in adult testes and is responsible for genital development, beard growth, muscle development, and sexual drive 2)  Is produced by the placenta during pregnancy, with highest levels seen at conception and then steadily decreasing to non-detectable levels at term 3)  Is lowest is serum during the luteal phase of the menstrual cycle and highest during the follicular phase 4)  Parallels activity of the corpus luteum by rapidly increasing following ovulation and then abruptly falling to initial low concentrations prior to the onset of menstruation no references, just homework.
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
a) Give a detailed account of the hormonal control of the human menstrual cycle. Briefly explain the similarities and differences between oogenesis and spermatogenesis. b)
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