Summary of Urine Concentration and Dilution | Role of ADH(vasopressin)
6 views 0 purchase
Course
Physiology of kidney
Institution
Fatima Memorial Medical And Dental College
Book
Guyton and Hall Textbook of Medical Physiology
The entire process of creating diluted urine is thoroughly explained with graphics in this document, which covers the lesson on urine concentration and dilution. Additionally, factors that maintain the renal medulla's hyperosmolarity are discussed, and for greater comprehension, a flow graphic illu...
Test Bank for Guyton and Hall Textbook of Medical Physiology (Guyton Physiology) 13th Edition by John E. Hall Chapter 1-85
Test Bank in Conjunction with Guyton and Hall Textbook of Medical Physiology,Hall,13e
Summary of reabsorption in renal tubules
All for this textbook (147)
Written for
Fatima Memorial Medical And Dental College
Physiology of kidney
All documents for this subject (12)
Seller
Follow
aimenarif33
Content preview
URINE CONCENTRATION
AND DILUTION.
Role Of ADH (Vasopressin)
,Dilute urine and Role Of ADH Concentrated Urine and Role Of AD
• When there is excess water in the body and body • when there is a deficit of water and
fluid osmolarity is reduced, the kidney can excrete extracellular fluid osmolarity is high, t
urine with an osmolarity as low as 50 mOsm/L. kidney can excrete urine with a conce
of 1200 to 1400 mOsm/L.
• ROLE OF ADH
• When there is excess water in the body and • ROLE OF ADH
extracellular fluid osmolarity is reduced, the
secretion of ADH by the posterior pituitary • When osmolarity of the body fluids in
decreases, thereby reducing the permeability of the above normal (that is, the solutes in t
distal tubule and collecting ducts to water, which fluids become too concentrated), the
causes large amounts of dilute urine to be excreted. pituitary gland secretes more ADH, w
Thus, the rate of ADH secretion determines, to a increases the permeability of the dist
large extent, whether the kidney excretes a dilute or and collecting ducts to water, this allo
a concentrated urine. amounts of water to be reabsorbed a
decreases urine volume but does not
• OSMOLARITY: Amount of solute alter the rate of renal excretion of the
________________
Volume of ECF
, Mechanism of forming dilute urine
• After ingestion of excess water, the kidney rids the body of the excess w
but does not excrete excess amounts of solutes.
• When the glomerular filtrate is initially formed, its osmolarity is about th
same as that of plasma (300 mOsm/L). To excrete excess water, it is nec
to dilute the filtrate as it passes along the tubule. This is achieved by
reabsorbing solutes to a greater extent than water, but this occurs only
certain segments of the tubular system as follows.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller aimenarif33. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.79. You're not tied to anything after your purchase.
