Unit 1 - Excretion in various organs Flashcards
What is excretion
Removal of waste products formed as a result of metabolic reactions inside an organism
Is excretion a continuous process, if so, explain what takes place
waste substances continually diff into blood and carried to excre organs
what are the 4 excretory organs `
skin cancer
lungs
kidneys
alimentary canal
What is excreted from the skin
H2 Fucking O
salts
and lil urea
this is given off as sweat and cools body
What is excreted from the lungs
CO2 through cellular respi
H2O
What is excreted from the kidneys
N2 waste from liver
non- nitrogenous waste = H2O, CO2,drugs
What is excreted from the alimentary canal
Bile pigments + cholesterol are synthesized in the liver, then passes into the small intestine then excreted from the colon as faeces
Bacteria mucus also excreted ???
What is homoeostasis
The process of maintaining the ‘right conditions’ of an organism
What are some of the conditions that need to be right
Right H2O
Right Solutes
Right temp
Is the liver an excretory organ
No, but many waste products are made in the liver
What are some examples of nitrogenous waste
Urea
uric acid
What are some examples of non nitrogenous waste
Creatinine
Drug!
ALCOHOL!!!!!
What is urea
It is excess amino acids . It is the mainer N2 waste that’s made from deamination
What is uric acid
Breakdown of nucleic acid
What is creatinine
Phosphate found in muscles
