human body system
what system has the trachea
respiratory system
how do people breathe in and out
respiratory system
what system is the control center of the body
circulatory system
how much blood in the body
5
how does the circulatory system intereact with the respiratory system to provide oxygen to the body
the circulatory system pumps blood and keeps the heart beating and the respiratory system send oxygen to the body
what role does the lungs play
it provides oxygen for the body
how does the stomach break down food
muscles in the stomach churn and mix food with digestive juices