Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 45, Problem 5U
An organ is classified as part of the endocrine system if it
a. produces cholesterol.
b. is capable of converting amino acids into hormones.
c. has intracellular receptors for hormones.
d. secretes hormones into the circulatory system.
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Which of the following is not a function of the endocrine system?
A. Contributes to homeostatic feedback loops.
B. Produces quick effects through electrochemical mechanisms.
Shy
C. Alters the metabolic activities of many different target tissues and organs.
D. Releases chemicals into the bloodstream for distribution throughout the body.
Which of the following is an important function of the endocrine system?
a. Provides mechanisms for rapid response to changes in the body
b. Provides mechanisms that control the nervous system
c. It inhibits nervous system action on muscles and glands
d. It maintains a contant yet dynamic internal fluid environment
Which of the following statements about hormones is not correct?
A. The persistance of a hormone in the blood is usually of short duration.B. The time required for the onset of hormonal effects can vary
C. Organ responses to hormones occur as soon as receptors are bound.
D. The duration of hormone action is variable.
Chapter 45 Solutions
Biology
Ch. 45 - Which of the following best describes hormones? a....Ch. 45 - Steroid hormones a. can diffuse through the...Ch. 45 - Second messengers are activated in response to a....Ch. 45 - Which of the following is true about lipophilic...Ch. 45 - An organ is classified as part of the endocrine...Ch. 45 - Hormones released from the pituitary gland have...Ch. 45 - Prob. 7UCh. 45 - You think one of your teammates is using anabolic...Ch. 45 - Your Uncle Sal likes to party. When he goes out...Ch. 45 - Prob. 3A
Ch. 45 - Prob. 4ACh. 45 - Prob. 5ACh. 45 - You experience a longer period than normal between...Ch. 45 - Mild vitamin D deficiency can lead to...Ch. 45 - How can blocking hormone production decrease...Ch. 45 - Suppose that two different organs, such as the...Ch. 45 - Many physiological parameters, such as blood Ca2+...
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- Which of the following statements comparing the endocrine system and the nervous system is false? a. The endocrine system can reach almost all living cells. b. The endocrine system and the nervous system never interact with each other. c. Nervous system control is faster than endocrine control. d. Both systems can be considered as systems of communication.arrow_forwardWhich of the following statements about steroid and non-steroid hormones is false?a. Non-steroid hormones typically act through second messengers such as cAMP.b. Non-steroid hormones are not lipid soluble and cannot enter the target cell.c. Steroid hormones act usually slower than non-steroid hormones.d. Cortisol and aldosterone are non-steroid hormones that are produced by the cortex of the adrenal glandarrow_forwardWhich of the following best describes hormones? a. Hormones are relatively unstable and work only in the area adjacent to the gland that produced them. b. Hormones are long-lasting chemicals released from glands. c. All hormones are lipid-soluble. d. Hormones are chemical messengers that are released into the environment.arrow_forward
- A hormone differs from a neurotransmitter in thata. hormones act extracellularly, whereas neurotransmitters act withinthe cell that synthesized them.b. hormones are released only by neurons, whereas neurotransmittersare released by many different types of cells.c. hormones cause only fast responses (seconds or less) to stimuli,whereas neurotransmitters cause slow responses (minutes to hours)to stimuli.d. hormones affect only epithelial cells, whereas neurotransmittersaffect only muscle cells.e. hormones are released into the bloodstream and can activate manycells in many parts of the body, whereas neurotransmitters arereleased by neurons and affect adjacent cells.arrow_forwardUnlike the nervous system, the endocrine systema. uses chemical signals as a means of communication.b. helps maintain equilibrium.c. sends messages to target organs.d. changes the metabolism of cells.arrow_forwardWhich is the following is an example of the nervous system directly interacting with the endocrine system? a. The secretion of cortisol early in the morning b. The continuous secretion of thyroid hormone c. The secretion of epinephrine and norepinephrine during the fight or flight response d. The secretion of insulin after a mealarrow_forward
- Tumors that affect the pituitary can lead to decreases in some, but not all, hormones released by the pituitary. A patient with such a tumor exhibits fatigue, weight loss, and low blood sugar. This is probably due to lack of production of a. GH, which leads to loss of muscle mass. b. ACTH, which leads to loss of production of glucocorticoids. c. TSH, which leads to loss of production of thyroxin. d. ADH, which leads to excess urine production.arrow_forwardWhich of the following statements about the thyroid gland is true?a. It is located anterior to the trachea and inferior to the larynx.b. The parathyroid glands are embedded within it.c. It manufactures three hormones.d. all of the abovearrow_forwardThe formation and release of hormones from a cell or structure is calleda. digestion.b. excretion.c. synthesis.d. secretion.arrow_forward
- Which of the following statements is NOT true about human growth hormone (hGH)? Select one: a. Excessive levels of hGH has been linked with diabetes mellitus. b. Genetically engineered hGH has been used safely to treat dwarfism. c. After the growth plate has sealed, increased levels of hGH results in a widening of the nose. d. hGH is produced in the hypothalamus and secreted by anterior pituitary.arrow_forwardThe secretion of epinephrine and norepinephrine from the adrenal medulla is stimulated by a. adrenocorticotropic hormone. b. increased levels of growth hormone. C. sympathetic nerve innervation. d. increased levels of glucose in body fluidsarrow_forwardWhich of the following statements is not true of the endocrine system? Select one: A. Most of its components are not anatomically connected, unlike most other systems of the body. O B. It is one of two major regulatory systems of the body O C. It is an important regulator of homeostatic mechanisms. O D. The nervous and endocrine systems often overlap in function. O E. It is composed of glands that secrete chemical messengers through ducts into the blood.arrow_forward
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