What Is Life? A Guide to Biology with Physiology
4th Edition
ISBN: 9781319065447
Author: Jay Phelan
Publisher: W. H. Freeman
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Chapter 25, Problem 1MC
Summary Introduction
Introduction:
Uterine contractions and release of breastmilk are caused by oxytocin.
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What is the purpose of androgen binding protein by Sertoli cells of the testes?
a. Potentiates the actions of testosterone at target cells
b. Prevents testosterone from diffusing out the testes
c. Regulates level of testosterone via negative feedback control at the level of the anterior pituitary
d. To stimulate testosterone production
In females luteinizing hormone acts to _____.
A
initiate the shedding of the uterine wall to start mentruation
B
stimulate the corpus lutuem in the ovary to make estrogen and progesterone
C
stimulate the hypothalamus to make gonadotropin releasing hormone
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stimulate milk production during lactation
E
ALL of these are functions of luteinizing hormone
During adolescence, the events that interact to promote increased hormone production and sexual maturation result from activity of the (a) hypothalamus. (b) anterior lobe of the pituitary gland. (c) ovaries and testicular cells. (d) a, b, and c are correct.
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What Is Life? A Guide to Biology with Physiology
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- What is the function of the hormone erythropoietin? a. stimulates production of red blood cells b. stimulates muscle growth c. causes the fight-or-flight response d. causes testosterone productionarrow_forwardA cell secretes a product that diffuses through the interstitial fluid and acts on nearby cells. This process is an example of (a) neuroendocrine secretion (b) autocrine signaling (c) paracrine signaling (d) classical endocrine regulation (e) peptide hormone functionarrow_forwardWhich hormone is primarily responsible for the contractions during labor? a. oxytocin b. estrogen c. -HCG d. progesteronearrow_forward
- Match each pituitary hormone with its target. ____antidiuretic hormone a. gonads (ovaries, testes) ____oxytocin b. mammary glands, uterus ____luteinizing hormone c. kidneys ____growth hormone d. most body cellsarrow_forwardHormones secreted by endocrine glands are _________________. * A. passed through ducts B. circulated in the blood C. produced in large amounts D. cause damage to the bodyarrow_forwardIn a female, follicle-stimulating hormone (FSH) and luteinizing hormone (LH) target the:a. uterus. c. ovaries.b. anterior pituitary gland. d. hypothalamus.arrow_forward
- FSH and LH are produced by the a. ovaries. b. testes. c. anterior pituitary. d. adrenal glands.arrow_forwardSertoli cells produce androgen binding protein. The purpose of this androgen binding protein is to : (select one) a. Transport testosterone to the developing germ cells b. Increase the clearance rate of testosterone c. Prevent the germs cells being exposed to toxic concentrations of testosterone d. Manufacture androgens e. Transport testosterone to the capillariesarrow_forwardWhich of the following would most likely reduce levels of active estrogen to potentially modulate cancer risk? a) Increased alcohol consumption b) Increased dietary folate c) Decreased levels of sex-hormone-binding globulin d) Increased phytoestrogen intakesarrow_forward
- Estradiol is found in high levels in the pregnant rat. This estradiol is prevented from affecting the development of the fetus because: a. it is chemically converted to testosterone, which does not affect the fetus b. it is bound by alpha-fetoprotein c. the blood-brain barrier keeps estrogens like estradiol out of the brain d. the fetus does not possess the estrogen receptors needed to respond to the estradiolarrow_forwardOestrogens are produced from androgens in the granulosa cells (GC) in the ovary. These androgens are derived from… a) The blood b) The interstitial (theca) cells c) Granulosa cells d) The oocytearrow_forwardIn male fetuses, testosterone is converted into ___ Which is required for genitalia to develop into a penis and scrotum. Complications in the activity of this hormone can disrupt the development of external sex organs in male fetuses, and can produce intersex variations. A) estradiol B) dihydrotestosterone C) Müllerian inhibiting hormone D) luteinizing hormonearrow_forward
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