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Structure
· Outer part of each kidney ­ CORTEX
· Inner part of each kidney ­ MEDULLA
· Blood enters the kidney through the RENAL ARTERY
and leaves through the RENAL VEIN
· The capillaries form knots called a GLOMERULUS
· This is surrounded by a RENAL CAPSULE
· The RENAL CAPSULE leads into a NEPHRON TUBULE
· The NEPHRON TUBLULES are divided into four
parts: the PRIMAL CONVOLUTED TUBE (nearest the
renal capsule), the DISTAL CONVOLUTED TUBE
(furthest from the renal capsule), the LOOP OF
HENLE and the COLLECTING DUCT…read more

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THE CAPILLARY NETWORK AND
NEPHRON TUBULE…read more

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What happens in the kidney?
1. The RENAL ARTERY splits into arterioles
2. Each arteriole forms a GLOMERULUS
3. ULTRAFILTRATION takes place here, where
substances are forced out of the arteriole, into the
RENAL CAPSULE
4. This filtrate enters the NEPHRON TUBULE
5. Useful substances are REABSORBED into the blood
by capillaries surrounding the NEPHRON TUBULE
6. Eventually URINE is formed and this flows into the
COLLECTING DUCT and into the URETER.…read more

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