Decreased renal blood flow Sympathetic input Angiotensinogen Renin released by juxtaglomerular cells of nephron cleaves angiotensinogen Stimulating variables: Nitric oxide from macula densa CAMP Diuretics Epinephrine Norepinephrine Early part of day Erect posture Angiotensin I Inhibiting variables: Adenosine from macula densa Angiotensin II Adrenergic blocking agents Aldosterone Recumbent posture Later part of day Angiotensin II
Decreased renal blood flow Sympathetic input Angiotensinogen Renin released by juxtaglomerular cells of nephron cleaves angiotensinogen Stimulating variables: Nitric oxide from macula densa CAMP Diuretics Epinephrine Norepinephrine Early part of day Erect posture Angiotensin I Inhibiting variables: Adenosine from macula densa Angiotensin II Adrenergic blocking agents Aldosterone Recumbent posture Later part of day Angiotensin II
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:Decreased renal
blood flow
Sympathetic
input
Angiotensinogen
Increased effective
blood volume
to correct initial stimulus
to the system
Increased sodium and
water reabsorption by
nephron collecting duct
Renin released
by juxtaglomerular
cells of nephron
cleaves
angiotensinogen
A) decreased renal blood flow
B) increased renal blood flow
C) sympathetic input
D) angiotensin II negative feedback
Stimulating variables:
Nitric oxide from
macula densa
E) increased blood volume
CAMP
Diuretics
Epinephrine
Norepinephrine
Early part of day
Erect posture
Hyponatremia
Hyperkalem
Fig. 17-17. The Feedback Mechanisms Regulating Aldosterone Secretion
CAMP Cyclic adenosine monophosphate; ACTH, adrenocorticotropic hormone
Copyright ©2008 by Mosby, Inc., an affliate of Elsevier Inc.
(-)
Angiotensin I
TAldosterone levels
Inhibiting variables:
Adenosine from macula densa
Angiotensin II
Adrenergic blocking agents
Aldosterone
Angiotensin I-converting
enzyme in lung
Recumbent posture
Later part of day
P
ACTH levels
Angiotensin II
Expert Solution
Step 1: Introduction.
Answer :- The feedback mechanisms regulating aldosterone secretion play a critical role in maintaining the body's fluid and electrolyte balance.
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