Excretion Flashcards
Define excretion
The removal of toxic substances
What do the kidneys control in the blood
Ion levels
Water content
What is the main function of the kidney
Remove unwanted substances from the body
What does the skin excrete
Sweat (urea and salt)
What do the lungs excrete
Carbon dioxide
What do the kidneys excrete
Urea
Excess salts
Ions
What does stomata excrete
Oxygen and excess carbon dioxide
Where in the nephron doe’s ultrafiltration occur
Glomerulus
What gets filtrated in ultrafiltration
Urea
Ions
Water
Glucose
Where do the ions get reabsorbed in the nephron
Loop of Henle
Where does glucose get reabsorbed in the nephron
Proximal tubule
Where does water get reabsorbed
Collecting duct
Which part of the kidney is where selective reabsorption happens
Medulla
Where in the kidney is the blood filtered
Cortex
How does the nephron respond to having a lack of water
Increasing collecting duct permeability
Increases concentration of urea
Releases ADH
