The Kidney Flashcards
What are the three jobs of the kidneys?
- Removal of urea from blood
- Adjustment of salt levels in blood
- Adjustment of water content of blood
The kidneys are part of which system?
The urinary system
What are the filtration units of the kidney?
Nephrons
What’s another organ of excretion in the body?
Skin, lungs
Where in the nephron does ultrafiltration occur?
Bowmans Capsule
What is the name for the bundle of capillaries at the start of the nephron?
The glomerulus
Where does blood flow into the nephron from?
The renal artery
What are the four substances squeezed out of the blood by the Bowmans Capsule?
Water, urea, salts, glucose
What’s the filtered liquid from the Bowmans capsule called?
Glomerular Filtrate
Name two substances found in urine?
Water, urea, salts
Where in the nephron is water absorbed back into the blood?
The collecting duct
A substance which stays in the blood throughout the nephron?
Proteins, blood cells
Useful substances are taken back into the blood in a process know as?
Selective reabsorption
What does the proximal convoluted tube reabsorb?
Glucose
Describe the journey urine takes when leaving the nephron?
Out the nephron through the ureter, then stored in the bladder before being released via the urethra.
