What are deep tendon reflexes?

Deep tendon reflexes are like a secret message your body sends when you're surprised or bumped.

Imagine you’re playing tag and someone taps your knee from behind, bam! You kick forward without thinking! That’s a deep tendon reflex in action. It’s how your body quickly reacts to something touching it, using special messengers called nerves.

Your leg has a tendon, which is like a strong string that connects your muscle to your bone. When someone taps this tendon, like a friendly nudge, it sends a message up your leg to your brain. The brain quickly replies with another message, telling your leg to move. Boom! You kick!

Doctors use these reflexes to check if everything in your body is working well. If your knee doesn’t kick when tapped, it might mean something isn’t quite right, just like if your toy car didn’t roll when you pushed it, you’d know it needed a little help!