EP HUMAN BIOLOGY-MODIFIED MASTERING
8th Edition
ISBN: 9780134326436
Author: Johnson
Publisher: PEARSON CO
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Chapter 13, Problem 8CR
Summary Introduction
To review:
The rationale behind histamine and nitric oxide not being labeled as hormones despite being chemical messengers.
Introduction:
Hormones are essentially the chemical messengers secreted by endocrine glands. They help the specific parts to perform or stop specific functions. These chemicals are secreted in blood so they can reach their destination fast. There are many hormones in the human body. However, histamine and nitric oxide are not considered as hormones.
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Chapter 13 Solutions
EP HUMAN BIOLOGY-MODIFIED MASTERING
Ch. 13 -
1. Why do you think that endocrine disruptors...Ch. 13 - Prob. 2QCCh. 13 - List the functions of the six hormones secreted by...Ch. 13 - Prob. 2CRCh. 13 - Prob. 3CRCh. 13 -
4. Define when you would call a norepinephrine a...Ch. 13 - Explain why a 30-year-old short person cannot be...Ch. 13 - Describe the function of the two hormones from the...Ch. 13 - Prob. 7CRCh. 13 - Prob. 8CR
Ch. 13 - Prob. 9CRCh. 13 - Prob. 10CRCh. 13 - _________ hormones enter target cells and bind to...Ch. 13 - Prob. 2TYCh. 13 - Prob. 3TYCh. 13 - Which two hormones most directly regulate...Ch. 13 - All of the following represent hormone pairs with...Ch. 13 - Prob. 6TYCh. 13 - Prob. 7TYCh. 13 - Prob. 8TYCh. 13 - Prob. 9TYCh. 13 - Prob. 10TYCh. 13 - Prob. 11TYCh. 13 -
12. Which of the following statements about...Ch. 13 - Prob. 13TYCh. 13 - Prob. 14TYCh. 13 - Which of the following would be triggered by a...Ch. 13 - Prob. 1AWKCh. 13 - Explain why an injection of epinephrine to combat...Ch. 13 - From what you read in section 13.5 draw the...Ch. 13 - Prob. 4AWKCh. 13 - Prob. 5AWKCh. 13 - A student finishes up the fall semester with...
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- A physician sees a patient whose symptoms include sluggishness, depression, and intolerance to cold. After eliminating other possible causes, the doctor diagnoses a hormone problem. What disorder fits the symptoms? Why does the doctor suspect that the underlying cause is a malfunction of the anterior pituitary gland?arrow_forwardGive two examples of feedback control of hormone activity.arrow_forwardDescribe the cellular mechanism of action of peptide hormonesarrow_forward
- A person with symptoms of hypothyroidism (i.e., sluggishness and intolerance to cold) is found to have abnormally low plasma concentrations of T4, T3, and TSH. After an injection of TRH, the plasma concentrations of all three hormones increase. Where is the site of the defect leading to hypothyroidism?arrow_forwardList and describe the functions of the three types of proteins involved in transmission of a hormone signal.arrow_forwardSignals carried by hormones must eventually be terminated. Describe several different mechanisms for signal termination.arrow_forward
- Which of the following are ways in which hormones exert their effects? - by controlling the rates of enzymatic reactions - by controlling changes in gene transcription - by activating postsynaptic receptors and generating EPSPs in hypothalamic neurons - by controlling the transport of ions across a cell membranearrow_forwardOne of the main endocrine glands in the human body is the pituitary gland. This gland produces a variety of hormones with different effects. Among these are a heterogeneous group of hormones called tropic hormones, which directly stimulate the secretion of other hormones from downstream endocrine glands. Which of the following are tropic hormones? Select all that apply. LH Prolactin Oxytocin ACTH TSH testosteronearrow_forwardList the major chemical classes of hormones found in the human body. Compare and contrast the mechanism of response that each class elicitsarrow_forward
- In the 1950s, Earl W. Sutherland, Jr., and his colleagues carried out pioneering experiments to elucidate the mechanism of action ofepinephrine and glucagon. Given what you have learned in this chapter about hormone action, interpret each of the experiments described below. Identify substance X and indicate the significance of the results.(a) Addition of epinephrine to a homogenate of normal liver resulted in an increase in the activity of glycogen phosphorylase. However, when the homogenate was first centrifuged at a high speed and epinephrine or glucagon was added to the clear supernatant fraction that contains phosphorylase, no increase in the phosphorylase activity occurred.(b) When the particulate fraction from the centrifugation in (a) was treated with epinephrine, substance X was produced. The substance was isolated and purified. Unlike epinephrine, substance X activated glycogen phosphorylase when added to the clear supernatant fraction of the centrifuged homogenate.(c)…arrow_forward“Since endocrine systems are the components of homeostatic feedback loop, co-ordination can be evident in hormone secretion” – explain this statement with an example.arrow_forwardBriefly explain why the endocrine system is important. Whats are some facts about the Endocrine that's interesting. Please explain with clarityarrow_forward
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