Name and define the three distinct processes involved in the production of urine.

Glomerular filtration is the first step in urine formation where blood plasma is filtered through the glomerulus into Bowman's capsule. This process separates water and small solutes from blood cells and large proteins, forming a filtrate that will be processed further.

Tubular reabsorption is the process by which essential substances like water, glucose, and ions are reabsorbed from the filtrate back into the bloodstream as it passes through the renal tubules. This ensures the body retains necessary nutrients and maintains fluid balance.

Tubular secretion involves the active transport of additional waste products and excess ions from the blood into the renal tubules. This process helps in eliminating substances not filtered initially and fine-tunes the composition of urine.