Question

IN YOUR OWN WORDS:

Discuss the four stages of urine formation: glomerular filtration, tubular reabsorption, tubular secretion, and water conservation.

Answer 1

There are three process.

1. Glomerular Filtration.

• The kidney is the body's blood filtering system.
• Blood vessels visit the kidney and enter a special ball of capillaries called the glomerulus.
• Glomerulus is nestled within a region of the kidney called the bowman's capsule.
• Filtration occurs in bowman's capsule.
• Blood is pushed through the tiny capillaries ,the high pressure forces some things to pass through the capillary walls.
• water ,sugar ,salt ,aminoacids ,nitrogenous wastes ,and other tiny things enter the kidney as a substance called the filtrate.

2. Tubular Reabsorption.

• The filtrate enters the kidney in the proximal convoluted tubule. This region of the kidney is special because many things can be removed from the filtrate.
• Glucose , certain salts , vitamins , hormones and amino acids are restored to the body.
• Reabsorption occur in Distal tubule ,henle's loop, collecting duct also.

3. Tubular Secretion.

• The filtrate then passes through a really neat structure called loop of henle, and enters the distal tubule , where secretion occurs.
• Mainly Hydrogen ion, potassium are mainly secreted in to the filtrate.

4. Water Conservation

• Removes water from the urine and returns it to the blood; concentrates wastes