✅ EXCESS / RESERVE ORGANS
These organs are important, but not essential for survival—the body can manage without them, often with medical support:
🟢 1️⃣ One Kidney
-
Why? You have two kidneys, but one can do the work of both.
-
Fact: Many people live a normal life with one kidney (e.g., after donation).
🟢 2️⃣ One Lung
-
Why? You have two lungs, but one can provide enough oxygen if healthy.
-
Fact: Lung removal (pneumonectomy) is sometimes done for cancer.
🟢 3️⃣ Spleen
-
Role: Helps fight infections and filters blood.
-
Without it: Higher infection risk, but vaccines and precautions can compensate.
🟢 4️⃣ Gallbladder
-
Role: Stores bile for digestion.
-
Without it: Bile goes straight from liver to intestine. Digestion usually adapts.
🟢 5️⃣ Appendix
-
Role: May have immune functions, but not vital.
-
Without it: No significant problems. Removed routinely (appendectomy).
🟢 7️⃣ Colon (Large Intestine)
-
Role: Absorbs water and stores waste.
-
Without it: Stool is more liquid; can live with ileostomy or surgical reconnection.
🟢 8️⃣ Stomach
-
Role: Starts digestion.
-
Without it: Food goes directly to small intestine (gastric bypass patients). Requires diet adjustments.
🟢 9️⃣ Parts of Liver
-
Why? Liver can regenerate.
-
Fact: Up to 2/3 of the liver can be removed, and it grows back.
ALSO TWO EYES, TWO EARS ARE ALSO RESERVE