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Articles In This Section

• Word! Irritable Bowel Syndrome

  Irritable bowel syndrome happens when the muscles in the large intestine have trouble doing their job.

• Word! Injection

  An injection is when the doctor uses a needle to put medicine or a vaccine into your body.

• Word! Impetigo

  Impetigo is a skin infection that can happen when bacteria get inside your skin from a cut.

• Word! Ileus

  An ileus is when the intestines stop working and don't move food, fluid, and gas the way they are supposed to.

• Word! Insulin Resistance

  Even though the pancreas is still making insulin, the body doesn't let insulin do its job as well and it's harder for glucose to get into the cells. This is called insulin resistance.

• Word! Islet Cells

  The pancreas contains clusters of cells that produce hormones. These clusters are known as islets.

• Word! Insulin Pump

  A person needs the hormone insulin so the body can function properly. If a person's body doesn't make enough insulin, one way to get it is through an insulin pump.

• Word! Insulin Injections

  Insulin is an important hormone that keeps your body working. If a person doesn't make enough of this substance, he or she may need to get insulin injections.

• Word! Insulin

  If someone has diabetes, he or she has trouble with a hormone called insulin.

• Word! Involuntary Muscle

  You don't have any say over what this kind of muscle does and when.

• Word! Intensive Care Unit

  The intensive care unit, or ICU, is a special place in the hospital where people can recover from very serious illnesses, accidents, or operations.

• Word! Iris

  Hey there, bright eyes!

• Word! Inhaler

  An inhaler, also called a puffer, is a plastic tube that holds a container of medicine that comes out in a spray and is breathed into the lungs.

• Word! Inhale

  You're doing it now . . . and now . . . and now . . . and now!

• Word! Influenza

  Feeling suddenly feverish, achy, and crummy all over?

• Word! Infection

  When germs get inside your body, they can multiply and cause an infection.

• Word! Immunotherapy and Allergy Shots

  Imagine if you were always sneezing because you were allergic to something.

• Word! Immunizations

  This is the long word for what most kids know as shots.

• Word! Ibuprofen

  If you've ever had the the flu, you might remember that awful achy feeling.

• Word! Immune System

  This body system, which includes white blood cells and lymph nodes, helps protect your body from disease.

• Word! IV

  IV is actually short for intravenous.

• Word! ICU

  Short for intensive care unit, this is a place in the hospital where people can recover from very serious illnesses, accidents, or operations.