EBK BIOLOGY
5th Edition
ISBN: 9780133954425
Author: Maier
Publisher: YUZU
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Chapter 22, Problem 3AAATB
Summary Introduction
To analyze:
Skipping the placebo pills causes a delay in the menstruation.
Introduction:
The oral contraceptives are the hormonal pills, which are made up of estrogen-progestin mix or progestin only. The progestin hinders the ovulation in the female body and prevents fertilization and implantation.
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Which of the following statements is true?
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A patient presents requesting hormonal contraception . She has been researching her options on the Web and has become confused by the large variety of OC pills available , including monophasic, multiphasic , and progesterone only . She asks how the pill prevents pregnancy and why the variety of preparations . Which of the following is the primary mechanism by which OCs prevent pregnancy ?
Increasing cervical mucus viscosity
Inhibiting serum follicle stimulating hormone (FSH) levels
Inducing lymphocytic endometritis
Inhibiting serum luteinizing hormone (LH ) levels
Sharon, aged 26 years, had been married for two years. Menarche was at age 14 with regular periods. When she was 24 her periods became irregular and she was started on the combined oral contraceptive pill. Wishing to become pregnant, she had stopped taking the pill one year earlier but her periods did not return. Her partner’s sperm count was normal. The following investigations were carried out (reference ranges are given in brackets): LH 21 IU/L (2–15) FSH 42 IU/L (1–15) Prolactin 350 mU/L (50–700)
(a) What do the high gonadotrophins suggest in this case?
(b) What is Sharon’s principal option to achieve a pregnancy?
Chapter 22 Solutions
EBK BIOLOGY
Ch. 22 - Prob. 1LTBCh. 22 - Describe the male and female reproductive...Ch. 22 - Describe gametogenesis in males and females.Ch. 22 - A sperm cell follows which path? seminiferous...Ch. 22 - An egg cell that is not fertilized follows which...Ch. 22 - Which of the following is mismatched? urethra:...Ch. 22 - Gametogenesis _________ . A. begins at puberty in...Ch. 22 - Prob. 8LTBCh. 22 - Prob. 9LTBCh. 22 - Prob. 10LTB
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