EBK HUMAN PHYSIOLOGY
15th Edition
ISBN: 8220106796238
Author: Fox
Publisher: YUZU
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Chapter 20, Problem 14RA
Summary Introduction
To determine:
The hormone responsible for the stimulation of contraction of the mammary glands and ducts during the milk-ejection reflex.
 Â
Introduction:
The vertebrate annimals that possess the mammary glands are termed as mammals and are put in the class Mammalia. These mammary glands are responsible for the production of milk that is required to feed the young ones. The process of milk production is stimulated by the actions of hormone.
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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
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 age
Chapter 20 Solutions
EBK 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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- During the third trimester of pregnancy, the placenta is not the primary source of which hormone in maternal blood?a. estrogenb. prolactinc. progesteronearrow_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_forwardWhat hormone stimulates milk production in the lactating breast? Group of answer choices a.progesterone b.prolactin c.LH d.estrogenarrow_forward
- A 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_forwardDuring the first trimester, hCG produced from the chorion maintains the corpus luteum. What is the purpose of maintaining the corpus luteum? Select one: a. The corpus luteum produces relaxin, which thickens the endometrium. b. The corpus luteum ensures that the endometrium does not break down during the first trimester. c. The corpus luteum supports the formation of the placenta. d. The chorion forms the fetal part of the placenta, and the corpus luteum supports the maternal part of the placenta.arrow_forwardThe proliferative phase of the endometrial cycle is characterized by thickening of the endometrial wall due to mitogenesis of the endometrial cells. Which hormone is most responsible for the thickening of the endometrial wall during the proliferative phase of the endometrial cycle? A. Estradiol B. Estrone sulfate C. Chorionic gonadotropin D. Endometriol E. Oxytocinarrow_forward
- What is the primary source of estrogen and progesterone during the first ten weeks of pregnancy? a. Ovarian follicle b. Placenta c. Corpus luteum d. Anterior pituitaryarrow_forwardWhich of the following condition will lead to a small- for -gestational -age fetus due to less blood supply to the fetus? * O A. Diabetes in the mother. B. Maternal cardiac condition. O C. Premature labor. D. Abruptio placenta.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
- Which of the following statements correctly describes the function of the Sertoli cells? a. Stimulate spermatogenesis b. Support the developing sperm cells c. Control the overproduction of testosterone d. Store testosterone in the testesarrow_forwardFSH and LH are produced by the a. ovaries. b. testes. c. anterior pituitary. d. adrenal glands.arrow_forwardWhich statement about maternal hormones during pregnancy is accurate? A.Estrogen levels decline throughout gestation. B.Estrogen levels increase throughout gestation. C.hCGlevels remain stable throughout gestation . D.hCGlevels increase throughout gestation. E.Progesterone levels decline throughout gestation.arrow_forward
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