Biology
Ligaments and Tendons
Quick fact
The Achilles tendon can withstand forces up to 1,000 pounds, making it one of the strongest tissues in the human body.
Why this is interesting
You can move your arm, but what holds your bones together and lets your muscles pull them? It’s not just one thing—two different types of tissue do these jobs, and confusing them could mean the difference between a sprain and a strain.