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Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
4th Edition
ISBN: 9781319154639
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Question
Chapter 26, Problem 8SA
Summary Introduction
To analyze:
The purpose of the estrogen and progesterone components in estrogen-progesterone birth control pills.
Introduction:
Birth control pills work around the fact that an egg starts developing in the ovary when the level of estrogen goes low enough to stimulate FSH.
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Chapter 26 Solutions
Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- What are some synthetic oestrogens?arrow_forwardBetween puberty and menopause, a biological woman in good health makes A)testosterone but not estrogen or progesterone. B)estrogen but not progesterone or testosterone. C)estrogen and progesterone but not testosterone. D)estrogen, progesterone, and testosterone.arrow_forwardPolycystic ovarian syndrome (PCOS) is an endocrine disorder. PCOS may result in irregular periods, elevated levels of male hormones, and enlarged ovaries with fluid filled sacs called cysts.Doctors may prescribe birth control pills containing only progesterone to help regulate periods and reduce symptoms.Progesterone plays an important role in the ovarian and uterine cycles. Describe the functions of progesterone during the cycle (at LEAST 2).arrow_forward
- Give at least nine (9) physiologic actions of estrogenarrow_forwardHormone replacement therapy was advertised first to women in the 1990s as a way of increasing their youthfulness. Hormone replacement therapy today is usually taking pills to increase someone's estrogen or testosterone supply. Pick either estrogen or testosterone. For either one: 1) How does your chosen sex hormone work at the cellular and at the molecular level? 2) How do these hormones improve the reproductive system as a whole? 3) What are the benefits of doing hormone replacement therapy? 4) What are the harms of doing hormone replacement therapy? 5) Who would be an ideal candidate for hormone replacement therapy?arrow_forwardWhat are the organizing effects of sex hormones? Compare the negative feedback loops in the male reproductive system with those of the female’s reproductive cycle. Describe an example of positive feedback involving estrogen that leads to ovulation. What are the hormonal changes during the luteal phase of the menstrual cycle?arrow_forward
- Which of the following is NOT TRUE? A) Menopause is marked by elevated levels of gonadotropins. A spermatozoon can survive for more than five days in a female reproductive tract. C) The proliferative endometrial phase is promoted by progesterone. Synthetic estrogens act as contraceptives by preventing the ovarian luteal phase. The hormonal basis of stress-induced amenorrhea is due to the influence of the limbic system on GNRH secretion.arrow_forwardUse the following information to answer the following question.The onset of labour both at term and preterm is associated with a functional withdrawl of progesterone activity at the level of the uterus. One method that can be used to reduce preterm labour is to supplement with synthetic progesterone.(https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3218546/)Progesterone supplementation may help to prevent preterm delivery by Select one: a. increasing levels of FSH b. decreasing the endometrium c. calming uterine contractions d. decreasing levels of estrogenarrow_forwardWhy do anabolic steroids lead to reduced sperm counts?arrow_forward
- Select the best answer or answers from the choices given: FSH is to estrogens as estrogens are to (a) progesterone, (b) LH, (c) FSH, (d) testosterone.arrow_forwardWhat two (2) hormones do combination birth control pills contain? Estrogen and progesterone What are their purposes? inhibit GnRH help preventing follicular developmentarrow_forwardIf 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) Progesteronearrow_forward
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