The Heart · Circulation
Everything moves.
Begin with a heartbeat. Follow the flow.
The heart is a muscular pump. Blood travels through a network of arteries, capillaries and veins, carrying oxygen and nutrients and carrying waste products away.
The lungs and heart work together: blood travels to the lungs for gas exchange, then returns to the heart to be pumped around the body.
That movement opens more than one question. Explore how we move, how we eat, or what blood pressure describes. Follow the existing Tracks at your own pace.
Go beneath this discovery ↓A CONNECTION WORTH FOLLOWING
The heart moves blood; the lungs exchange gases. Circulation connects the two.

