2.70 nephron structure

• The Aorta has blood taken into the kidney through the the renal artery
• the kidney filters the blood and the urine (as waste) goes down the ureter to the bladder for storage
• The filtered blood exits through the Renal vein to the Vena Cava

structure of kidney:
- cortex is the outer region (light brown)
- Medulla is the inner region (dark brown)
- pelvic region is the space, from where the urine moves into the ureter

the reason behind the different colours is because the kidney is made up of millions of tubes (Nephrons)
• the tube starts on the edge of the medulla and moves out into the cortex, where it has a little twisting section (convoluted tubules), then dipping back down into the medulla (the dip is known as a loop of Henle)and repeating until coming to a dead end.
• the dead end is known as a bowman's capsule
• The tight knot of blood vessels inside the capsule is known as a glomerubus
• The first convoluted tubule after the capsule is known as the proximal.
• the second is known as a distal (dct)
• The nephron structure gives the different colours to the kidney