Heart Structure and Function
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The document describes the structure and function of the heart. It explains that deoxygenated blood enters the right atrium via the vena cava and is then pumped to the right ventricle. The right ventricle pumps the blood to the lungs through the pulmonary artery. Oxygenated blood returns from the lungs to the left atrium via the pulmonary veins. The left atrium then pumps the blood to the left ventricle, which pumps it out to the body through the aorta. Valves prevent backflow of blood throughout the heart.
Heart Structure and Function
- 2. www.clickbiology.com Blood travels through the heart twice before returning to the body The double circulatory system
- 3. www.clickbiology.comwww.clickbiology.com External view of the heart pulmonary artery pulmonary vein coronary artery left ventricle right ventricle inferior vena cava right atrium pulmonary vein aorta superior vena cava
- 4. www.clickbiology.comwww.clickbiology.com The vena cava carries deoxygenated blood from the body to the right atrium superior vena cava (transports blood from the head) inferior vena cava (transports blood from rest of body)
- 5. www.clickbiology.comwww.clickbiology.com The right atrium collects deoxygenated blood and pumps it to the right ventricle right atrium
- 6. www.clickbiology.comwww.clickbiology.com The right ventricle pumps deoxygenated blood to the lungs right ventricle
- 7. www.clickbiology.comwww.clickbiology.com The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs aorta
- 8. www.clickbiology.comwww.clickbiology.com The septum separates the left and right sides of the heart septum
- 9. www.clickbiology.comwww.clickbiology.com The pulmonary veins carry oxygenated blood from the lungs to the left atrium Pulmonary veins
- 10. www.clickbiology.comwww.clickbiology.com The left atrium collects the oxygenated blood and pumps it to the left ventricle Left atrium
- 11. www.clickbiology.comwww.clickbiology.com The left ventricle pumps oxygenated blood to the body via the aorta Left ventricle
- 12. www.clickbiology.comwww.clickbiology.com The aorta carries the oxygenated from the left ventricle to the rest of the body Aorta Aortic arch
- 13. www.clickbiology.comwww.clickbiology.com Atrio-ventricular valves prevent backflow of blood into the atria when ventricles contract Bicuspid valve (mitral valve) Tricuspid valves Tendon
- 14. www.clickbiology.comwww.clickbiology.com The semi-lunar valves prevent backflow of blood from the arteries into the ventricles Aortic semi-lunar valve Pulmonary semi-lunar valve
- 15. www.clickbiology.comwww.clickbiology.com Summary Quiz Identify the part of the heart indicated by an arrow . There are 10 questions in total.
- 26. www.clickbiology.comwww.clickbiology.com Answers 1 left ventricle 2 vena cava 3 right atrium 4 pulmonary artery 5 aorta 6 pulmonary vein 7 left atrium 8 atrio-ventricular (tricuspid) valve 9 semi-lunar (aortic) valve 10 right ventricle