The urinary System (lesson 2) Flashcards
What does the urinary system maintain?
Water balance and filters blood
What are the three main regions of the kidney? (renals)
1) Renal cortex
2) Renal medulla
3) Renal pelvis
What must be removed to form urine?
Metabolic wastes (wastes you don’t need)
Where is urine created?
Nephrons of kidney
What are the three steps (ONE WORD) on how urine if created?
1) Filtration
2) Reabsorption
3) Secretion
Wastes in the blood diffuse by passive transport from Glomerulus into the Bowman’s capsule
Filtration
Whats in the filtrate at the Bowman’s capsule?
-Water
-Urea
-Glucose
-Amino acids
-Vitamins
-Salts and other ions
What can’t get though the walls of glomerulus?
RBC, WBC, platelets, fats, and plasma proteins
Useful materials reabsorbed into blood by active transport
Reabsorption
Substances reabsorbed in the proximal convoluted tubule and loop of Henle
-Water
-Glucose
-Amino Acids
Large wastes enter nephron through active transport, are filtered, modified, and exist through collecting tubules
Secretion