Human Body Systems and Immune System

This system is responsible for breaking food down into useable nutrients.

This system allows oxygen to enter the bloodstream.

(a)  

This system works with the skeletal system to allow you to swim.

(a)  

Without this system, oxygen could not reach the brain.

(a)  

The body uses negative feedback to maintain (a)   .

An example of homeostasis is sweating when you are hot. Sweating helps maintain your body's

Which system protects your brain and lungs?

(a)  

Which system works with the digestive system to allows nutrients to reach the muscles?

(a)  

Which system helps move food through the small intestines?

(a)  

Which system releases hormones that help regulate growth?

(a)