The useful idea
- A muscular organ
The heart is a muscular organ found in humans and other animals.
- Four chambers
In humans, the heart is divided into four chambers: upper left and right atria and lower left and right ventricles.
- Heart and vessels
The heart and blood vessels together make up the circulatory system.
Why this matters
Use Heart to ask clearer questions; personal health decisions still belong with a qualified professional.
Try this
Use Heart to ask clearer questions; personal health decisions still belong with a qualified professional.
Test your recall
Which idea belongs to the explanation of Heart?
- A muscular organ — correct
- Four chambers
- Heart and vessels
The heart is a muscular organ found in humans and other animals.
General education only — not medical advice, diagnosis, or treatment.