Physiology of the Urinary Tract System

💦🩺🧻 “Flush out the waste, stay fresh and clean!”

1. The Main Squad – Meet the Organs!

Your urinary system has 4 superstars:

Kidneys (2) 🫘 – the main filters

Ureters (2) 🧪 – tubes that carry urine

Bladder (1) 💧 – stores urine

Urethra (1) 🚽 – the final exit route!

They work together like a clean-up crew!

2. Kidneys – Your Built-In Detox Machines 🧼

These bean-shaped organs:

Filter waste, toxins, & extra water from blood

Regulate electrolytes, blood pressure & pH

Produce urine = your liquid waste!

Also make hormones like EPO (for red blood cells) and renin (for BP)!

🩸➡️🫘➡️💦 Blood in, clean urine out!

3. The Nephrons – Microscopic Miracle Workers 🔬

Each kidney has over a million nephrons!

They do the actual filtering via:

Glomerulus – filters blood

Tubules – reabsorb water & nutrients, secrete waste

⚙️ Like tiny factories running 24/7!

4. Ureters – The Silent Couriers 🧪

These slim, muscular tubes carry urine from the kidneys to the bladder using peristaltic waves (smooth muscle movements)!

🚚 No leaks, no delays!

5. The Bladder – Storage Tank Deluxe 💧

A stretchy, muscular sac that:

Collects urine (holds 400–600 mL)

Expands like a balloon

Sends signal to brain when it’s full!

Voluntarily releases via urethra

💬 “Hey, it’s time to pee!”

6. Urethra – The Final Exit Tunnel 🚽

A small tube that carries urine out of your body!

Controlled by a sphincter muscle (acts like a tap),Shorter in females, longer in males.🧠 + 💪 = You control the flow!

7. Pee is More Than Waste!

Urine can tell a LOT about your health:

Color, smell, frequency = body’s status alerts

It’s 95% water, with salts, urea, and waste

Fun Facts

You make 1–2 liters of urine a day!

Kidneys filter about 50 gallons of blood DAILY!

They never take a break!

Keep Your Filters Fresh!

Drink water, eat healthy, and treat your kidneys with love!

💧🫘 “When your urinary system works well, you feel well!