Summary
Summary of the Liver's role in Excretion
- Course
- Institution
A handy guide on the importance of excretion and in specific the liver's role in ensuring that a homeostatic medium is maintained
[Show more]
Seller
Follow
farazhaider2003
Reviews received
Content preview
Excretion P.24-25What are the main Excretory products in the body?
Excretory organ Molecules and ions exrceted
The lungs CO2
The liver Amino acids, nitrogen containing part of
molecule.
The skin Salts. Urea, water, uric acid and ammonia
The kidney The urea is removed from blood to form part of
urine
Why is excretion important?
Carbon Dioxide excretion:
Hydrogen ions and Hydrogen carbonate ions are released when carbonic acid dissociates in the RBC
and the plasma.
What are the consequences of this?
CO2 produced in every living cell because of respiration and is passed to bloodstream
where transported mostly as HCO3- to lungs where CO2 diffuses into alveoli to be
excreted as we breathe out
HCO3- forms H+ ions which combine haemoglobin and actively compete with O2 for
space reducing oxygen transport. CO2+ Haemoglobin = carbaminohaemoglobin
which has a lower affinity for O2 than normal haemoglobin
Excess CO2 dissolves in blood plasma and H2) to form H2CO3 which dissociates to
release H+ ions which lower pH. Breathing rate increases to help remove excess CO2.
If blood pH drops below 7.35 symptoms.
Nitrogenous compounds – the body cannot store excess amino acids so they are deaminated and
converted into UREA in the Liver (see later)
1
, 2
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 farazhaider2003. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $3.91. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
60904 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now