Human Physiology
15th Edition
ISBN: 9781259864629
Author: Fox, Stuart Ira
Publisher: Mcgraw-hill Education,
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Chapter 20, Problem 4RA
Summary Introduction
To review:
The level of various hormones during ovulation.Â
Introduction:
The menstrual cycle is comprised of four phases that include menstrual phase, follicular phase, luteal phase and ovulation phase. The egg or ovum is released from the ovary which then travels through the fallopian or uterine tube and enters the uterus. In case, when fertilization occurs, the embryo formed as a result gets implanted in the endometrial lining of the uterus.
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Students have asked these similar questions
Which of the following rows correctly describes the hormone levels during ovulation?
Select one:
a.
Hormone
Level
Hormone
Level
Estrogen
High
LH
High
b.
Hormone
Level
Hormone
Level
FSH
Low
Estrogen
Low
c.
Hormone
Level
Hormone
Level
Estrogen
Low
Progesterone
Low
d.
Hormone
Level
Hormone
Level
Progesterone
High
FSH
High
Which row correctly identifies the function and a source of hCG, respectively?
Select one:
A.
Function
Source
Stimulate Estrogen
Ovary
B.
Function
Source
Stimulate FSH
Anterior Pituitary
C.
Function
Source
Aid Implantation
Uterus
D.
Function
Source
Maintains Corpus Luteum
Trophoblast and Placenta
Which row correctly identifies the function and source of hCG, respectively?
Select one:
a.
Function
Source
Stimulates FSH
Anterior pituitary
b.
Function
Source
Aids implantation
Uterus
c.
Function
Source
Maintains corpus luteum
Trophoblast and placenta
d.
Function
Source
Stimulates estrogen
Ovary
Chapter 20 Solutions
Human Physiology
Ch. 20 - Define the terms diploid and haploid, and explain...Ch. 20 - Explain how the chromosomal sex determines whether...Ch. 20 - List the male and female accessory sex organs and...Ch. 20 - Describe the abnormalities characteristic of...Ch. 20 - Prob. 3aCPCh. 20 - Prob. 3bCPCh. 20 - Prob. 4aCPCh. 20 - Prob. 4bCPCh. 20 - Prob. 4cCPCh. 20 - Prob. 5aCP
Ch. 20 - Prob. 5bCPCh. 20 - Prob. 6aCPCh. 20 - Prob. 6bCPCh. 20 - Describe the roles of FSH and testosterone in...Ch. 20 - Prob. 8aCPCh. 20 - Prob. 8bCPCh. 20 - Prob. 9aCPCh. 20 - Prob. 9bCPCh. 20 - Describe the changes that occur in the ovary and...Ch. 20 - Describe the formation, function, and fate of the...Ch. 20 - Prob. 11aCPCh. 20 - Explain the significance of negative feedback...Ch. 20 - Prob. 12aCPCh. 20 - Prob. 12bCPCh. 20 - List the fetal and maternal components of the...Ch. 20 - Prob. 13bCPCh. 20 - Prob. 14CPCh. 20 - Prob. 15CPCh. 20 - Prob. 1RACh. 20 - Prob. 2RACh. 20 - Prob. 3RACh. 20 - Prob. 4RACh. 20 - Prob. 5RACh. 20 - Prob. 6RACh. 20 - Prob. 7RACh. 20 - Prob. 8RACh. 20 - Which of these statements is true?
Ch. 20 - Prob. 10RACh. 20 - Prob. 11RACh. 20 - Prob. 12RACh. 20 - Prob. 13RACh. 20 - Prob. 14RACh. 20 - Prob. 15RACh. 20 - The contents of the birth control pill
Ch. 20 - Which of the following statements regarding...Ch. 20 - Prob. 18RACh. 20 - Prob. 19RACh. 20 - Prob. 20RACh. 20 - Prob. 21RACh. 20 - Prob. 22RACh. 20 - Prob. 23RACh. 20 - Prob. 24RACh. 20 - Prob. 25RACh. 20 - Prob. 26RACh. 20 - Prob. 27RACh. 20 - Describe the steps of oogenesis when fertilization...Ch. 20 - Prob. 29RACh. 20 - Prob. 30RACh. 20 - Prob. 31RACh. 20 - Prob. 32RACh. 20 - Prob. 33RACh. 20 - Prob. 34RACh. 20 - Prob. 35RACh. 20 - Prob. 36RACh. 20 - Prob. 37RACh. 20 - Prob. 38RACh. 20 - Prob. 39RACh. 20 - Prob. 40RACh. 20 - Prob. 41RACh. 20 - Prob. 42RACh. 20 - Prob. 43RACh. 20 - Prob. 44RA
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- In the fertility awareness method of birth control, a woman gauges her monthly fertile period by monitoring changes in the consistency of her vaginal mucus. What kind of information does such a method provide about the likelihood of getting pregnant?arrow_forwardA woman taking birth control pills would be expected to have Select one: a. higher than normal FSH and LH levels due to fewer negative feedback messages being sent to the ovaries b. higher than nomal FSH and LH levels due to fewer negative feedback messages being sent to the pituitary gland c. lower than normal FSH and LH levels due to more negative feedback messages being sent to the pituitary gland d. lower than normal FSH and LH levels due to more negative feedback messages being sent to the ovariesarrow_forwardA woman taking birth control pills would be expected to have Select one: a. higher than normal FSH and LH levels due to fewer negative feedback messages being sent to the ovaries b. higher than normal FSH and LH levels due to fewer negative feedback messages being sent to the pituitary gland c. lower than normal FSH and LH levels due to more negative feedback messages being sent to the pituitary gland d. lower than normal FSH and LH levels due to more negative feedback messages being sent to the ovariesarrow_forward
- Using the following hormone choices, which of the following puts the hormones of the female menstrual cycle in the correct order starting from day 1 and assuming a pregnancy has happend. A. estrogen B. follicle stimulating hormone (FSH) C. human chorionic gonadotropin (HCG) D. luteinizing hormone (LH) E. progesterone F. testosterone O A. B, E, C, A, D O B. A, D, B, C, E O C.B, A, D, E, C O D. D, B, A, E, Carrow_forwardWhich of the following statement correctly describe the role of androgen in the male reproductive system? Select one: A. LH stimulates the Sertoli cell to produce inhibin and to start spermatogenesis. B. Increased levels of inhibin released by the interstitial cells result in lower levels of FSH and testosterone. C. Increased levels of testosterone feedbacks negatively to the anterior pituitary and hypothalamus. D. GnRH is released by the anterior pituitary and stimulates the release of FSH and LH.arrow_forwardA. There is an increase of FSH at the beginning of the menstrual cycle. What causes it? B. There is a surge in E2 level before the ovulation. What causes it? C. There is a decrease of FSH before the ovulation. What causes it? D. There is a surge of LH and FSH that induces the ovulation. What causes the surge? E. There is a decrease of LH and FSH after ovulation. What causes it? F. There is a decrease in E2 after ovulation. What causes it? G. There is an increase of E2 and P4 a few days after the ovulation. What causes it? H. There is a decrease of E3 and P4 at the end of menstrual cycle. What causes it?arrow_forward
- What is a potential consequence of embryonic exposure to endocrine-disrupting compounds that can bind to estrogen receptors? Select one: a. Increased growth rate and early birth b. Decrease in size of developing testes c. Increased rate of ovulation d. Decreased sperm count e. Choices B and D are correctarrow_forwardWhich of the following statements correctly describes the role of androgens in the male reproductive system? Select one: a. Increased levels of testosterone feedbacks negatively to the anterior pituitary and hypothalamus. b. GnRH is released by the anterior pituitary and stimulates the release of FSH and LH. c. Increased levels of inhibin released by the interstitial cells results in lower levels of FSH and testosterone. d. LH stimulates the Sertoli cells to produce inhibin and to start spermatogenesis.arrow_forwardWhich of the following correctly describes the results of andropause? Select one: A. Lower sperm count and increased rate of testicular cancer. B. Increased estrogen levels and decrease testosterone levels. C. Decreased fertility and increased testosterone levels. D. Reduction of muscle and bone mass and lower sperm count.arrow_forward
- Plasma concentrations of LH and FSH rise dramatically after menopause. This is because (select one) a. The negative feedback of gonadal steroids is no longer present b. Rising gonadotrophins maintains the fertility of older animals c. Fertility in older woman declines d. The pituitary becomes more efficient with agearrow_forwardAround day 21 of the 28-day cycle, administration of estrogen and progestin stopped for 7 days. A low level of progesterone results in. Select one: A. menstruation, as the endometrium is built up and maintained by progesterone. B. increased level of estrogen released by the corpus luteum / C. suppression of GnRH in the hypothalamus and FSH and LH in the anterior pituitary. D. increased levels of FSH and LH, resulting in a mature follicle.arrow_forwardThe 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. Progesterone supplementation may help to prevent preterm delivery by Select one: a. increasing levels of FSH b. decreasing the endometrium c. decreasing levels of estrogen d. calming uterine contractionsarrow_forward
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