The Urinary System - Nephrons Pt 3

Question 1

To recap, the nephrons form urine in a three-part process:

Answer 1

Filtration, Reabsorption, Secretion

Question 2

Filtration

Answer 2

Blood pressure forces water and dissolved substances out of blood and through membranes of the glomerulus

Question 3

Reabsorption

Answer 3

Substances that the body can use (such as water, glucose, and other nutrients) pass through the renal tubules back into the bloodstream via adjacent capillaries

Question 4

Salts such as sodium, potassium, and chloride will be either ____ or ____ in the filtrate, depending on the body’s electrolyte balance

Answer 4

reabsorbed or retained

Question 5

Secretion

Answer 5

Wastes and excess substances are secreted directly into the collecting tubules as urine, which drains through the renal pelvis and ureter into the bladder