Urinary system
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17 Terms
Primary function of urinary system
Filter blood.
Urinary system overall role
Maintains homeostasis by filtering blood and regulating body composition.
What is the primary function of the nephrons?
To form urine by modifying filtrate.
Filtration
Movement of fluid from blood into capsular space.
Key concept of the filtration membrane
Blood stays in vessels, only filtrate leaves.
What is reabsorption in urine formation?
The process of reclaiming useful substances from filtrate back into the blood.
GFR (glomerular filtration rate)
Rate at which filtrate is formed.
What does a high NaCl level indicate in the JGA?
High glomerular filtration rate (GFR).
RAAS
Hormonal system that increases blood pressure and volume.
Fluid Compartments
Includes intracellular fluid (ICF) and extracellular fluid (ECF).
Osmolarity
Solute concentration.
Potassium regulation
Balanced by urinary secretion.
Normal pH range of blood
7.35–7.45.
Acidosis
pH below 7.35.
Alkalosis
pH above 7.45.
Effect of hyperkalemia
High potassium affects heart and muscles.
Effect of hypokalemia
Low potassium affects muscle function.