urine formation

Question 1

Glomerular Filtration

Answer 1

Water, salts, nutrient molecules, and waste molecules move from the glomerulus to the inside of the glomerular capsule called the glomerular filtrate.

Question 2

Tubular Reabsorption

Answer 2

Nutrient and salt molecules are actively reabsorbed from the convoluted tubules into the peritubular capillary network, and water flows passively.

Question 3

Tubular Secretion

Answer 3

Certain ions and molecules like hydrogen and penicillin are actively secreted from the peritubular capillary network into the convoluted tubules.