Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 45, Problem 1TYK
Summary Introduction
Introduction: The endocrine system is the chemical signaling system that uses the blood vessels as information channels. The endocrine glands are ductless organs located within the organ systems and contain groups of endocrine cells that secrete their hormones directly into their surroundings. Hormones are signaling molecules that help to regulate physiology and behavior.
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Chapter 45 Solutions
Study Guide for Campbell Biology
Ch. 45 - Label the parts of the following diagrams,...Ch. 45 - Compare negative and positive feedback in the...Ch. 45 - What is a tropic hormone? Give some examples.Ch. 45 - The thyroid gland produces two hormones, thyroxine...Ch. 45 - Prob. 5IQCh. 45 - Prob. 1SYKCh. 45 - What is a hormone cascade pathway? Describe how...Ch. 45 - Prob. 1TYKMCh. 45 - Prob. 2TYKMCh. 45 - Prob. 3TYKM
Ch. 45 - Prob. 4TYKMCh. 45 - Prob. 5TYKMCh. 45 - Prob. 6TYKMCh. 45 - Prob. 7TYKMCh. 45 - Prob. 8TYKMCh. 45 - Prob. 9TYKMCh. 45 - Prob. 10TYKMCh. 45 - Prob. 1TYKCh. 45 - Prob. 2TYKCh. 45 - Prob. 3TYKCh. 45 - The activation of helper T cells during an immune...Ch. 45 - Prob. 5TYKCh. 45 - Prob. 6TYKCh. 45 - Which of the following hormones is secreted by the...Ch. 45 - Prob. 8TYKCh. 45 - Prob. 9TYKCh. 45 - Prob. 10TYKCh. 45 - Prob. 11TYKCh. 45 - The anterior pituitary a. stores and releases...Ch. 45 - Prob. 13TYKCh. 45 - Prob. 14TYKCh. 45 - Prob. 15TYKCh. 45 - Prob. 16TYKCh. 45 - Prob. 17TYKCh. 45 - Prob. 18TYKCh. 45 - Prob. 19TYKCh. 45 - Prob. 20TYK
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- Which 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_forwardWhich of the following is a prohormone and can be converted to an active hormone as needed? A. Diiodothyronine , or T2. B. Thyroxine, or T4 . C. Triiodothyronine or T3 D. Thyroid-stimulating hormonearrow_forwardOxytocin is a peptide hormone that is released into the bloodstream and interacts with smooth muscle cells that have receptors, which stimulate lactation when binding to the hormone. Oxytocin is most likely a... A. Lipid-soluble, tropic hormone B. Water-soluble, nontropic hormone C. Water-soluble, tropic hormone D. Lipid-soluble, nontropic hormone E. Pheromonearrow_forward
- Concerning the half-life of hormones,a. lipid-soluble hormones generally have a longer half-life.b. hormones with a shorter half-life regulate activities with a slowonset and long duration.c. hormones with a shorter half-life are maintained at more constantlevels in the blood.d. lipid-soluble hormones are degraded rapidly by enzymes in the circulatory system.e. water-soluble hormones usually bind to plasma proteins.arrow_forwardWhich 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 environmentarrow_forwardWhich of the following is true about lipophilic hormones? a. They are freely soluble in the blood. b. They require a transport protein in the bloodstream. c. They cannot enter their target cells. d. They are rapidly deactivated after binding to their receptors.arrow_forward
- Which of the following describes neurohormones? a. Hormones that affect nerve cell activity b. Hormones that inhibit nerve cell activity C. Hormones released into the blood by neurons d. Hormones released into the synaptic cleft by presynaptic neuronsarrow_forwardWhich hormone utilizes a "hormone response element" as part of its signaling mechanism? A. Luteinizing hormone B. Epinephrine C. Dihydrotestosterone D. Follicle stimulating hormone E. Anti-Müllerian hormonearrow_forwardWhich of the following acts as the link between the nervous systemand the endocrine system?a. posterior pituitary gland b. hypothalamusc. anterior pituitary gland d. parathyroidarrow_forward
- The actions of lipid-soluble hormones include a. activation or inhibition of enzymatic pathways. b. binding with a hormone-responsive element. c. muscle contraction or relaxation. d. stimulation of cellular secretions.arrow_forwardWhich of the following manipulations could hypothetically alleviate the physiological stress response? A. Block the action of the parasympathetic nervous system. B. Apply an ACTH agonist. C. Block the action of the sympathetic nervous system. D. Increase the production of glucocorticoids.arrow_forwardwhich of the following happens when a therapeutic synthetic homone is introduced intno the body to treat patients natural hormone insufficiency?(select all that apply) A. The target cell responds the same way as when the hormone is natural B. the synthetic hormone has no effect on the target tissues C. the amount of natural hormone produced by the patients body declines D. the synthetic hormone is destroyed before it can have an effect on the target tissue.arrow_forward
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