1. The Circulatory System: Parts of the Heart Human Bio 11

3. Parts of the Heart The heart has two separate pumps that work simultaneously. Right Side: ◦ Collects oxygen-poor blood from the body and pumps it to the lungs. Left Side: ◦ Collects oxygen-rich blood from the lungs and pumps it to the body.

5. Parts of the Heart The septum divides the right and left sides. It prevents the mixing of oxygen-poor and oxygen-rich blood.

6. Parts of the Heart Superior Vena Cava: ◦ Large vein ◦ Brings oxygen-poor blood from the upper part of the body to the right atrium. Inferior Vena Cava: ◦ Large vein ◦ Brings oxygen-poor blood from the lower part of the body to the right atrium.

9. Parts of the Heart Right Atrium: ◦ Collects the blood from the body and sends it to the right ventricle. Right Ventricle: ◦ Receives blood from the atrium and sends it to the pulmonary arteries.

11. Parts of the Heart Pulmonary Arteries: ◦ Only arteries that carry oxygen-poor blood. ◦ Send blood to the lungs.

13. Parts of the Heart Pulmonary Veins: ◦ Only veins that carry oxygen-rich blood. ◦ Send blood to the left atrium.

15. Parts of the Heart Left Atrium: ◦ Collect the blood from the lungs and sends it to the left ventricle. Left Ventricle: ◦ Largest chamber. ◦ Receives blood from the left atrium and sends it to the aorta.

17. Parts of the Heart Aorta: ◦ Brings oxygen-rich blood from the left ventricle to the body.

20. Parts of the Heart Valves stop the blood from flowing back in the wrong direction. Tricuspid Valve: ◦ Between the right atrium and right ventricle. Bicuspid Valve: ◦ Between the left atrium and left ventricle.

21. Parts of the Heart Heart Anatomy up to 1:58