Hi there
user
Hello! How can I help you today?
assistant
I'm learning about the human body in school, and I was wondering what the muscular system does.
user
The muscular system helps us move, supports our body structure, and protects our internal organs. It's made up of over 640 muscles that work together to keep us alive and active.
assistant
That's really cool. What's the biggest muscle in our body?
user
The gluteus maximus is the largest muscle in the human body. It's located in the buttocks and helps us walk, run, and climb stairs.
assistant
I see. So, how many muscles do we use when we smile?
user
When we smile, we use around 17 muscles in our face. Smiling is a complex process that involves many small muscles working together to create different facial expressions.
assistant