Urine production Flashcards
Where does ultrafiltration occur?
Glomerulus/bowman’s Capsule
Give one component of blood which is not normally present in the filtrate.
Red Blood Cells
Reabsorption of glucose takes place in the proximal tubule. Explain how the cells of the proximal tubule are adapted for this function.
Mitochondria that produces ATP allowing the sodium potassium pumps to work. Microvilli to increase surface area of absorption. Transport proteins that are used to transport proteins such as glucose. A concentration gradient that allows for facilitated diffusion with sodium potassium pumps.
Which arterial delivers blood to the glomerulus?
Afferent
Where does re-absorption of glucose take place?
The Proximal tubule
Why are mitochondria important in the cells of the PCT?
They produce energy in the form of ATP to use to allow the sodium potassium pumps to work
Why is a sodium concentration gradient important to allow glucose to enter the cells of the PCT?
The co transport proteins require glucose and sodium to diffuse at the same time
What happens in the ascending limb of the loop of henle?
Sodium ions are actively pumped out
What happens in the descending limb in the loop of henle?
Water moves out via osmosis
How does urine move from the collecting duct to the bladder?
Via the ureter
What is the role of the basement membrane of the bowman’s capsule?
Filters the blood as it goes into the bowman’s capsule
What is the role of podocyte?
Make gaps in the cells
Where does selective re-absorption take place?
In the Proximal convoluted tubule
