The kidney plays a critical role in almost every body function and is provided by the relation of blood pressure to kidney function. Generally, the blood contained in the glomerular capillaries must be at higher pressure than the fluid around them. This phenomenon helps in pushing the fluid and dissolved substances to push through the
capillary membranes towards Bowman’s capsule.
Hypotension is a state when the blood pressure in the body falls too low and formation of urine is stopped. If a portion of the kidney is suffering from anaemia kidney cells secrete pressor hormones, which serve to elevate the bp. Thus hypertension may be a sign of kidney disorder.
Urine drains into large collecting basins from ends of tubules, which is drained to kidney pelvis and then it slides down drop by drop to the urinary bladder. Urinebis held there by contraction of sphincters. When about a half-pint has accumulated, nerves convey the urge to urinate to the brain. This is the normal process that takes place in the kidney and urinary tract.
Reference: The new complete medical and health encyclopedia. Volume 1)