Urinary System

Why This Matters for Nursing: Monitoring urine output is essential for assessing kidney function and hydration. Understanding the urinary system helps you interpret labs, manage catheters, and recognize kidney problems.

What You Need to Know

The urinary system removes waste, regulates water and electrolytes, and maintains blood pH.

Main Functions:

1. Filter blood — Remove waste products
2. Regulate fluid balance — Control water retention/excretion
3. Regulate electrolytes — Sodium, potassium, calcium balance
4. Regulate pH — Maintain acid-base balance
5. Produce hormones — Erythropoietin (RBC production), renin (blood pressure)

🧠 Memory Trick

Urinary System Order: "Kids Usually Urinate Beautifully"

Kidneys → Ureters → Urinary bladder → Urethra

Nephron Parts: "Go Bowman, Pass Lightly Down Collecting" Glomerulus → Bowman's → Proximal tubule → Loop of Henle → Distal tubule → Collecting duct

Anatomy