Answer:
The key steps to urine formation have been outlined in the attached file (flow chart diagram). Key components highlighted.
Explanation:
GLOMERULAR FILTERATION
The kidney consists of NEPHRONS, which consist of a network of capillaries (surrounded by the Bowman’s capsule), called GLOMERULUS. Water and solutes are filtered from the blood in the capillaries into the capsule through a filtration membrane.
The HYPOTHALAMUS in the brain secretes VASOPRESSIN A.K.A ANTIDIURETIC HORMONE (ADH). The ADH passes through the PITUITARY GLAND into the bloodstream and serves to regulate the blood pressure and water levels the kidney absorbs.
REABSORB VITAL NUTRIENTS
While larger cells and proteins are retained in the bloodstream, glomerular filtrate (fluids) flows into the RENAL TUBULE where reabsorption of essential substances that may have escaped the membrane, are taken in through the convoluted tubule.
SECRETION AND EXCRETION
Waste ions are also passed into the renal tubule in a process called Secretion. UREA is also released into the blood stream and to the tubes, after being broken down by the LIVER. All waste mixes with the filtrate to form urine.
Urine is collected in a duct, and passed out of the kidney in the ureter and the excreted from the bladder.