Concepts of Biology
1st Edition
ISBN: 9781938168116
Author: Samantha Fowler, Rebecca Roush, James Wise
Publisher: OpenStax College
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Textbook Question
Chapter 18, Problem 2ACQ
Figure 18.17 Which of the following statements about hormone regulation of the female reproductive cycle is false?
a. LH and FSH are produced in the pituitary, and estrogen and progesterone are produced in the ovaries.
b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to
thicken.
c. Both progesterone and estrogen are produced by the follicles.
d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estrogen but stimulated by high levels of estrogen.
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Which of the following statements about hormone regulation of the female reproductive cycle is false? a. LH and FSH are produced in the pituitary, and estradiol and progesterone are produced in the ovaries. b. Estradiol and progesterone secreted from the corpus luteum cause the endometrium to thicken. c. Both progesterone and estradiol are produced by the follicles. d. Secretion of GnRH by the hypothalamus is inhibited by low levels of estradiol but stimulated by high levels of estradiol.
Which 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.
Which of the following statements does NOT describe the role of progesterone in the female reproductive system?
a. Triggers the release of the ovum
b. Prevents smooth muscle contraction, thereby preventing premature birth
c. Prevents the shedding of the endometrium
d. Ensures that the endometrium is thick enough to support a fetilized egg
Chapter 18 Solutions
Concepts of Biology
Ch. 18 - Figure 18.12 Which of the following statements...Ch. 18 - Figure 18.17 Which of the following statements...Ch. 18 - In which group is parthenogenesis a normal event?...Ch. 18 - Genetically unique individuals are produced...Ch. 18 - External fertilization occurs in which type of...Ch. 18 - The process of gastrulation forms the _______. a....Ch. 18 - Which of the following gives rise to the skin...Ch. 18 - Sperm are produced in the _______. a. scrotum b....Ch. 18 - Which female organ has an endometrial lining that...Ch. 18 - Which hormone causes FSH and LH to be released? a....
Ch. 18 - Nutrient and waste requirements for the developing...Ch. 18 - Which hormone is primarily responsible for the...Ch. 18 - What might be a disadvantage to...Ch. 18 - Compared to separate sexes and assuming...Ch. 18 - What do you think would happen if multiple sperm...Ch. 18 - Compare spermatogenesis and oogenesis as to timing...Ch. 18 - Describe the events in the ovarian cycle leading...Ch. 18 - Describe the stages of labor.
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