Recommended
More Related Content
What's hot
What's hot (20)
Viewers also liked
Viewers also liked (20)
Similar to Heart structure and_function
Similar to Heart structure and_function (20)
Recently uploaded
Recently uploaded (20)
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 ā¢ Why do we say that humans have a ādouble circulationā? ā¢ Amphibians and fish have a āsingleā circulation system. What do you think this means?
- 4. www.clickbiology.comwww.clickbiology.com ā¢ The cardiac muscle cells are said to be āMYOGENICā i.e. they does not need electrical impulses from a nerve to make them contract. If the cardiac muscle is supplied with oxygen and nutrients (a task carried out by theĀ coronary arteriesĀ which you can see running over the surface of the heart) it will continue to contract at a steady pace.
- 5. 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
- 6. 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)
- 7. www.clickbiology.comwww.clickbiology.com The right atrium collects deoxygenated blood and pumps it to the right ventricle right atrium
- 8. www.clickbiology.comwww.clickbiology.com The right ventricle pumps deoxygenated blood to the lungs right ventricle
- 9. www.clickbiology.comwww.clickbiology.com The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs aorta
- 10. www.clickbiology.comwww.clickbiology.com The septum separates the left and right sides of the heart septum
- 11. www.clickbiology.comwww.clickbiology.com The pulmonary veins carry oxygenated blood from the lungs to the left atrium Pulmonary veins
- 12. www.clickbiology.comwww.clickbiology.com The left atrium collects the oxygenated blood and pumps it to the left ventricle Left atrium
- 13. www.clickbiology.comwww.clickbiology.com The left ventricle pumps oxygenated blood to the body via the aorta Left ventricle
- 14. www.clickbiology.comwww.clickbiology.com The aorta carries the oxygenated from the left ventricle to the rest of the body Aorta Aortic arch
- 15. 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
- 16. 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
- 17. www.clickbiology.comwww.clickbiology.com Summary Quiz Identify the part of the heart indicated by an arrow . There are 10 questions in total.
- 28. 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
- 29. An ECG ā or electrocardiogram - is a simple and useful test which records the rhythm and electrical activity of your heart.
- 30. Click up here This will only work if you are watching this as a slide show
- 33. QRS = Ventricular systole P = Atrial systole T= Ventricular diasole
- 34. The ECG can: ā¢ Assess your heart rhythm ā¢ Diagnose poor blood flow to the heart muscle (ischemia) ā¢ Diagnose a heart attack ā¢ Evaluate certain abnormalities of your heart, such as an enlarged heart
- 35. ā¢Trace the flow of blood through the heart, identifying the major blood vessels, chambers and heart valves
- 36. ā¢ Describe and explain the normal ECG cycle. Explain the events of the cardiac cycle and say how these relate to the heart sound