Blood

• What is the function of the pulmonary vein?

  Transports oxygenated blood from the lungs to the heart
• What does the aorta do?

  Transports oxygenated blood from the heart around the body
• What is the role of the vena cava?

  Transports deoxygenated blood from the body back to the heart
• Function of pulmonary artery

  transports deoxygenated blood from heart to lungs
• What is the function of the pulmonary artery?

  It transports deoxygenated blood from the heart to the lungs.
• What does the hepatic artery transport?

  It transports oxygen and glucose to the liver.
• What is the role of the hepatic portal vein?

  It transports digested food from the small intestine to the liver.
• What are the main blood vessels associated with the liver and their functions?

  • Pulmonary artery: Transports deoxygenated blood from the heart to the lungs.
  • Hepatic artery: Transports oxygen and glucose to the liver.
  • Hepatic portal vein: Transports digested food from the small intestine to the liver.
• What is the function of the hepatic artery?

  It supplies oxygenated blood to the liver.
• What is the role of the heart in the circulatory system?

  The heart pumps blood throughout the body.
• What does the hepatic portal vein do?

  It carries blood from the digestive organs to the liver.
• What organ is primarily responsible for detoxification and metabolism?

  The liver.
• What is the function of the renal vein?

  It carries deoxygenated blood away from the kidneys.
• Which organ is involved in nutrient absorption from food?

  The small intestine.
• What is the role of the kidney in the body?

  The kidney filters waste products from the blood.
• What does the pulmonary vein do?

  It carries oxygenated blood from the lungs to the heart.
• What is the function of the renal artery?

  It supplies oxygenated blood to the kidneys.
• What is the vena cava's role in the circulatory system?

  It carries deoxygenated blood from the body back to the heart.
• What is the shape of a red blood cell?

  It has a biconcave shape.
• Why do red blood cells have a large surface area?

  To facilitate the efficient exchange of oxygen.
• Why do red blood cells lack a nucleus?

  To provide more space for hemoglobin.
• What is contained in red blood cells that carries oxygen?

  Hemoglobin.
• What is the significance of iron in hemoglobin?

  Iron is essential for the binding and transport of oxygen.
• What is the primary function of red blood cells?

  To carry oxygen throughout the body.
• Plasma

  transports blood cells , absorbed food molecules , carbon dioxide, hormones and urea
• What are the key features of red blood cells?

  • Biconcave shape for large surface area
  • No nucleus for more space for hemoglobin
  • Contains hemoglobin, which carries oxygen
  • Iron in hemoglobin is crucial for oxygen transport
• Platelet

  convert fibrogen to fibrin which forms a mesh network preventing blood loss and infection
• lymphocytes

  produce anti bodies
• Phagocytes

  engulf and digest micro organisms by phagocytosis
• What is the primary function of capillaries in the circulatory system?

  They link arteries and veins.
• How thick are capillaries?

  They are one cell thick.
• What is the diameter of capillaries?

  Capillaries have a narrow diameter.
• Do capillaries have valves?

  No, capillaries do not have valves.
• What role do capillaries play in blood exchange?

  They serve as an exchange surface for nutrients and waste products.
• How many chambers does the heart have?

  Four chambers
• What are the upper chambers of the heart called?

  Atria
• What happens to a red blood cell when placed in pure water?

  The cell swells and bursts, a process known as cell lysis.
• What are the larger, lower chambers of the heart called?

  Ventricles
• What is the process called when a red blood cell swells and bursts in pure water?

  Cell lysis.
• Why are the ventricle walls thicker than the atria walls?

  Because they need to pump blood with greater force