Basic Structure & Appearance
Your heart is actually a muscle about the size of your closed fist, and it grows as you grow!

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Your heart is actually a muscle about the size of your closed fist, and it grows as you grow!
Your bones partner with your digestive system to store and release important minerals when needed!
Fallopian tubes are special tubes that only girls and women have in their bodies — they’re part of what makes females unique and special!
The retina’s scientific name is “tunica interna bulbi” which means “innermost coat of the eyeball”!
Your doctor can check the health of your humerus using special X-ray pictures!