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Myalgia is muscle pain — when muscles hurt because of an injury, overuse, or a medical condition.
Word! Multiple Sclerosis
When someone has multiple sclerosis, their nerves don't send signals to the brain the way they should.
MRI machines take detailed pictures of the insides of people's bodies to help doctors learn what's wrong when there's a problem.
People call mononucleosis "kissing disease" because you can get it from someone else's saliva. Mono can make you feel super tired and sick.
A migraine is a really bad kind of headache that can make you feel dizzy or even sick to your stomach.
Menstruation is a period — the 2 to 7 days each month that a girl or woman experiences menstrual flow.
The meninges cover and protect the brain and spinal cord. Meningitis happens when the meninges swell or get irritated.
Myopia is also known as nearsightededness, which means you can see things up close, but have trouble seeing objects far away, like the words on a chalkboard.
When you think of mucus, you might think of snot, which is that sticky stuff inside your nose.
Word! Mucous Membrane
Just as skin lines and protects the outside of the body, mucous membranes line and protect the inside of your body.
A microscope is a very powerful magnifying glass.
Ever wonder where your skin gets its color?
Malocclusion is a word that dentists and orthodontists use when your teeth don't come together like they should.