Ch. 45 - Hormones and the Endocrine System
Chapter 45, Problem 1
Which of the following is not an accurate statement? a. Hormones are chemical messengers that travel to target cells through the circulatory system. b. Hormones often regulate homeostasis through antagonistic functions. c. Hormones of the same chemical class usually have the same function. d. Hormones are often regulated through feedback loops.
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Related Practice
Textbook Question
The hypothalamus a. synthesizes all of the hormones produced by the pituitary gland. b. influences the function of only one lobe of the pituitary gland. c. produces only inhibitory hormones. d. regulates both reproduction and body temperature.
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Textbook Question
Growth factors are local regulators that a. are produced by the anterior pituitary. b. are modified fatty acids that stimulate bone and cartilage growth. c. are found on the surface of cancer cells and stimulate abnormal cell division. d. bind to cell-surface receptors and stimulate growth and development of target cells.
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Textbook Question
Which hormone is incorrectly paired with its action?
a. oxytocin—stimulates uterine contractions during childbirth
b. thyroxine—inhibits metabolic processes
c. ACTH—stimulates the release of glucocorticoids by the adrenal cortex
d. melatonin—affects biological rhythms and seasonal reproduction
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