The atrium fills with the waste-rich blood and then contracts, pushing the blood through a one-way valve down into the right ventricle. Two large veins called the vena cavae bring blood to the right atrium of the heart. The “lub dub” you hear when using a stethoscope is the sound of the ventricles contracting and the heart valves closing during this circulation process.īlood takes a very precise route during pulmonary circulation. Pulmonary circulation is the movement of blood through the right side of the heart, to the lungs, and then back through the left side of the heart.

Read about each system to check your answers.ĭid you know that you can actually hear pulmonary circulation? You could say it acts as the factory “foreman” to set the pace and regulate all of the other body systems.Ĭan you guess which of the body’s systems do the following things in your factory/body?ī) Create the sound that doctors listen for with a stethoscopeĬ) Push blood throughout your entire body Different systems within your body are responsible for different jobs, yet they all share the common goal of keeping you alive.Īt the center of all of this activity is the heart. Other teams may assemble different parts of the engine.īut even though each team is doing its own thing, they all share a common goal: to make cars. If you go inside the walls of a car factory, you’re likely to encounter many different teams doing many different things. WATCH: Ingenious: The Evolution of Innovation.Harry Potter: The Exhibition - FINAL WEEKS!.

Learning factory hours