Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 42, Problem 10TYK
Summary Introduction
Introduction:
In animals, hormones are produced by the neurosecretory neurons. They regulate the processes of reproduction, development, and growth of some of the features of the body. They also regulate the sugar levels, heart rate, water balance, and reproduction in annelids, arthropods, and mollusks. Certain hormones are related in invertebrates and vertebrates.
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Which of these assertions about hormones is not accurate? Which of these assertions about hormones is not accurate?
A.)Hormones produced by the hypothalamus are considered neurohormones.
B.) Cortisol is released in response to the release of ACTH from the pituitary.
C.) Hormonal changes during puberty and pregnancy are forms of endocrine disruption.
D.) Growth and metamorphosis are controlled by hormones.
The hormones that drive frog metamorphosis are _____ while those involved in insect metamorphosis are_____.
a. T3 and T4; juvenile hormone and ecdysone
b. TR alpha and TR beta; adrenaline and ecdysone
c. Juvenile hormone and ecdysone; T3 and T4
d. cortisol and corticosterone; juvenile hormone and ecdysone
What would be the external genital appearance of a mammal exposed to high levels of both androgens and estrogens during early development? What if it were exposed to low levels of both?
Chapter 42 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 42.1 - What is the difference between a hormone and an...Ch. 42.1 - How is endocrine signaling different from...Ch. 42.2 - Prob. 1SBCh. 42.2 - Prob. 2SBCh. 42.3 - Prob. 1SBCh. 42.3 - Prob. 2SBCh. 42.4 - What effect does parathyroid hormone have on the...Ch. 42.4 - Prob. 2SBCh. 42.4 - Prob. 3SBCh. 42.4 - Prob. 4SB
Ch. 42.5 - How do hormones compare structurally and...Ch. 42 - Prob. 1TYKCh. 42 - Prob. 2TYKCh. 42 - When the concentration of thyroid hormone in the...Ch. 42 - Which of the following statements about endocrine...Ch. 42 - Prob. 5TYKCh. 42 - Prob. 6TYKCh. 42 - If the human body is stressed, glucocorticoids: a....Ch. 42 - Prob. 8TYKCh. 42 - Prob. 9TYKCh. 42 - Prob. 10TYKCh. 42 - Prob. 11TYKCh. 42 - Prob. 12TYKCh. 42 - Discuss Concepts In integrated pest management, a...Ch. 42 - Prob. 14TYKCh. 42 - Prob. 15TYKCh. 42 - Prob. 1ITDCh. 42 - Prob. 2ITDCh. 42 - Prob. 3ITDCh. 42 - Researchers measured prolactin and growth hormone...
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- 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.arrow_forwardCompare the locations of the adrenal glands in the fetal pig with those in the human.arrow_forwardWhat 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 productionarrow_forward
- How would mutations that completely ablate the function of the androgen receptor impact the phenotypic development of humans with XY chromosomes? a. Patients would appear phenotypically female. b. Patients would appear phenotypically male with underdeveloped secondary sex characteristics. c. Patients would appear phenotypically male, but cannot produce sperm. d. Patients would express both male and female secondary sex characteristics.arrow_forwardHormones are often used to control the development and metabolism of agriculturally important organisms. These hormones often end up in the external environment (water or soil). Based on your knowledge of hormonal action which of the following is a likely developmental effect of hormones in the environment on organisms in that environment? Group of answer choices A. Failure to form body axes B. Shortening of limbs C. Changes in the time to reach sexual maturity D. Changes one species into another E. Elongation of limbsarrow_forwardThe period between consecutive luteinizing hormone peaks most directly determines which of the following? A. the length of time between pregnancies B. the length of time between periods of fertility C. the length of time during which a fetus develops D. the length of time during which a female is fertilearrow_forward
- What would happen to male hormone levels if the hypothalamus producedgonadotropic releasing hormone (GnRH) continuously? A. Luteinizing hormone (LH), follicular stimulating hormone (FSH), andtestosterone levels would be high. B. Testosterone levels would be low C.Only luteinizing hormone (LH) and follicular stimulating hormone (FSH)levels would be high. D. Only testosterone levels would be high.arrow_forwardWhile anabolic steroids (synthetic testosterone) bulkup muscles, they can also affect testosterone production inthe testis. Using what you know about negative feedback,describe what would happen to testosterone production inthe testis if a male takes large amounts of synthetictestosterone.arrow_forward(c) Name two hormones produced by the ovaries in female. (d) Name the major cells in the gonads that produce the two hormones in (c) during follicular phase. during luteal phases. (e) Contraceptive pill contains the two hormones in (c). Briefly explain how they work.arrow_forward
- What is the evolutionary origin of the pineal gland of birds and mammals? Explain the role of the pineal hormone, melatonin, in regulating seasonal reproductive rhythms in birds and mammals. Does melatonin have any function in humans?arrow_forwardWhat are four actions of hormones in invertebrates?arrow_forwardObservations of the developing chick embryo reveal that skeletal muscles develop from the transplanted somites even though motor neurons innervating those muscles arise from chick neural crest cells. Based on these observations, what is MOST likely true? A. Neural crest cells differentiate into somites. B. Neural crest cells fuse with developing somite cells. C. Neural crest cells develop from migrating somite cells. D. Neural crest cells send projections into developing somites.arrow_forward
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