Circulatory system

• The "LUBB DUBB" sound of a heartbeat is caused by the closing of the heart valves
• What is the purpose of the circulatory system?

  Transport nutrients, and gases through the body
• What kind of tissue is blood?

  Connective tissue
• What are the components of blood?

  Plasma, RBC, WBC, and platlets
• Erythrocytes are red blood cells which carry oxygen and carbon dioxide around the body
• Leukocytes are white blood cells that fight off infections
• Thrombocytes are platelets which help in blood clotting
• How does blood clotting work?

  Platelets stick to collagen fibers at the sight of the broken blood vessel
• Cardiac circulation is the circulation of blood with the heart muscles
• Cardiac circulation blood vessels are the coronary arteries and veins
• Pulmonary circulation if the circulation of blood between the heart and lungs
• Pulmonary arteries carry deoxygenated blood to the lungs

  Pulmonary veins carry oxygenated blood back to the heart
• Systemic circulation is the circulation of blood between the heart and body
• Systemic circulation blood vessels are the systemic arteries and veins
• What are the 4 chambers of the human heart?

  Left atrium, left ventricle, right atrium, right ventricle.
• What does the septum of the human heart prevent?

  Mixing of oxygenated and deoxygenated blood.
• How many valves does the human heart have?

  4
• Where is the tricuspid valve located?

  Between the right atrium and right ventricle
• Where is the bicuspid valve located?

  Between the left atrium and left ventricle
• The subilunar valves prevent blood from backflowing blood into the ventricles
• What are the MAJOR blood vessels of the human heart?

  Aorta, pulmonary arteries and veins, superior and inferior vena cava.
• What structures benefits and prevents backflow of blood in the veins?

  Valves