Donatable Organs- Khan Academy's Guide

What Organs Can Be Donated?

Not everyone knows exactly what organs can be transplanted. The list is shorter than most people think, but each one can save multiple lives.

These are the organs that can be donated:

• Heart — pumps life through your body, can go to someone with end-stage heart failure
• Lungs — single or double lung transplant for cystic fibrosis, COPD, or pulmonary fibrosis patients
• Liver — can be split between two recipients; regenerates in the donor's body too
• Kidneys — most commonly donated organ; you have two, so living donation is possible
• Pancreas — helps Type 1 diabetics produce insulin again
• Intestines — less common, but performed for digestive failure

Tissue donations like corneas, skin, bone, and heart valves are different—they don't count as organs but still save thousands of lives annually.

Khan Academy's Approach to This Topic

Khan Academy offers a free video series on human anatomy that covers organ systems in detail. Their transplant content explains how organs fail, what happens during donation, and the basics of immune rejection.

What makes their materials useful:

• Clear visuals showing where organs are located and how they function
• Simple explanations of complex processes like HLA matching
• No paywall—you get the same education as medical students

The platform doesn't specifically have a dedicated "organ donation" course, but their health and medicine section covers the biological foundation you need to understand why transplantation works.

Living Donors vs. Deceased Donors

Most organ donations come from deceased donors. But living donation is increasingly common and generally safer for recipients.

What Living Donors Can Give

• One kidney (the body functions normally with one)
• A portion of the liver (regrows to full size)
• A portion of the lung (doesn't regenerate but works fine with less)

What Only Deceased Donors Can Give

• Heart
• Both lungs
• Pancreas (rarely from living donors)

Living donors are typically family members or close friends. Strangers can also donate anonymously, though it's less common.

The Matching Process

Getting an organ isn't like picking one from a shelf. The system uses a complex matching algorithm that considers:

• Blood type compatibility
• Tissue type (HLA markers)
• Size of the organ relative to the recipient
• How sick the recipient is (sickest patients get priority)
• Distance between donor and recipient (organs have limited cold ischemia time)

Kidneys can survive outside the body for 24-36 hours. A heart? You have 4-6 hours at best. That's why location matters so much.

Common Misconceptions

Most people who say "no" to donation have wrong information. Let's clear that up.

• "Doctors won't try to save me if they know I'm a donor." False. Medical teams are separate from the transplant team. Their job is to save your life, not harvest organs.
• "I'm too old to donate." There's no age cutoff. Even people in their 70s and 80s have donated organs that saved lives.
• "My religion doesn't allow it." Almost every major religion explicitly supports organ donation or leaves it to individual choice.
• "I have a medical condition, so nothing is usable." Doctors evaluate each donor individually. HIV and active cancer typically rule out donation, but many chronic conditions don't.

How to Register as a Donor

It's simple. Most countries have a national registry.

• USA: Register at organdonor.gov or through your state's DMV
• UK: Sign up at NHS Organ Donor Register
• Canada: Register through your provincial health authority
• Australia: Register at donatelife.gov.au

Tell your family. They may be asked to confirm your decision, and knowing your wishes removes unnecessary stress during an already terrible time.

Organ Donation by the Numbers

Here's the reality check nobody wants to think about until they need an organ.

Every day, people die waiting. One donor can save up to eight lives. The math is brutal and simple.

What Khan Academy Gets Right (And What It Doesn't)

Khan Academy's strength is explaining the biology—why organs fail, how immune rejection happens, what tissue typing means. Their videos give you the science.

What they don't cover:

• The bureaucratic side of organ allocation
• How transplant centers evaluate recipients
• The financial costs (insurance, medication, lost work)
• Post-transplant life and medication side effects

For that practical stuff, you need resources like UNOS, NHS Blood and Transplant, or your national equivalent.

The Bottom Line

Registering as an organ donor takes five minutes. It costs nothing. It doesn't affect your medical care. And when you're dead, those organs are useless to you anyway.

Khan Academy can teach you the science. The decision to donate is yours to make—but make it consciously, not out of fear or ignorance.