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When you are dehydrated, your body secretes ADH. What is the effect of ADH on the collecting ducts?

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter14: The Urinary System

Section: Chapter Questions

Problem 7UC

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Question

When you are dehydrated, your body secretes ADH. What is the effect of ADH on the collecting ducts?

Expert Solution

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The pituitary gland is the pea-sized endocrine gland that is enclosed by the protective structure called as sella turcica. It is located at the base of the brain where a pituitary stalk called infundibulum attaches it to the hypothalamus. It consists of three lobes namely anterior lobe, posterior lobe and intermediate lobe.

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Similar questions

When you are have sufficient water volume in your blood, you stop secreting ADH. What is the effect of the absence ADH have upon on the collecting ducts?
In the collecting duct the secretion of K+ is regulated and secreted by what causing a response to what? And causes this effect and in turn helps what?
What is unique about blood flow out of the glomerular capillaries (Hint: what vessel drains them)? How does this help to explain why the pressure in the glomerular capillaries is higher than other capillaries?
What is the difference between the glomerular capillaries and the peritubular capillaries? How do these relate to afferent and efferent arterioles? Why do the efferent arterioles have oxygenated blood? (The answer isn’t “they are called arterioles, therefore they have oxygenated blood.)
Name the gland whose secretion is vasopressin.
Why is albumin not normally present in the urine?
The major action of ADH in the kidneys is to:a. increase water absorption by the proximal convoluted tubule.b. increase glomerular filtration rate.c. increase water reabsorption by the collecting duct.d. increase potassium’s excretion.
Describe how the collecting duct harnesses the medullary osmotic gradient to concentrate urine. Name the hormone involved in this process and a stimulus for its release.
Describe the two capillary beds through which blood must pass in the kidney.
Under circumstances of having low blood pressure , how does the sympathetic nervous system decrease glomerular filtration rate ? stimulates constriction of the efferent arteriole only stimulates relaxation of the mesangial cells stimulates secretion of erythropoietin stimulates constriction of both the afferent and efferent arterioles
Under what conditions is ADH released from the posterior pituitary? What effect does ADH have on the collecting ducts?
A marine shark is spotted swimming in fresh water. How might this shark’s kidney function be affected?