Circulatory System

• What is the circulatory system also called?

  Cardiovascular system
• What is the main function of the circulatory system?

  To transport substances around the body
• What organs make up the circulatory system?

  Heart, blood vessels, and blood
• What does blood carry in the circulatory system?

  Oxygen, nutrients, cells, and waste products
• What role do blood vessels play in the circulatory system?

  They hold and direct blood around the body
• How does the heart function in the circulatory system?

  It pumps blood to ensure continuous flow
• What are the two circuits in a double circulatory system?

  Pulmonary circuit and systemic circuit
• What happens in the pulmonary circuit?

  Blood flows from the heart to the lungs
• What happens in the systemic circuit?

  Blood flows from the heart to body tissues
• How does blood flow through the heart?

  From atria to ventricles, then to vessels
• What are the names of the heart's chambers?

  Right atrium, right ventricle, left atrium, left ventricle
• What are the atrioventricular valves' function?

  They ensure blood flows in one direction
• How should the heart be oriented in diagrams?

  As if viewed from another person's perspective
• Why is the left ventricle's wall thicker than the right ventricle's?

  It pumps blood around the entire body
• What is the body's largest vein?

  Vena cava
• What does the pulmonary artery do?

  It carries blood to the lungs for oxygenation
• What carries oxygenated blood from the lungs to the heart?

  Pulmonary vein
• What is the function of the aorta?

  It carries blood from the heart to the body
• What happens to blood after it travels around the body?

  It returns to the heart via the vena cava
• What supplies the heart muscle with oxygenated blood?

  Coronary arteries
• What can happen if coronary arteries get blocked?

  It can lead to coronary artery disease
• What is the process of blood circulation in mammals?

  • Blood is pumped from the heart to the lungs (pulmonary circuit)
  • Blood becomes oxygenated in the lungs
  • Oxygenated blood returns to the heart
  • Blood is pumped from the heart to the body (systemic circuit)
  • Blood returns to the heart to restart the cycle
• What are the key components of the heart's structure?

  • Four chambers: right atrium, right ventricle, left atrium, left ventricle
  • Atrioventricular valves between atria and ventricles
  • Thicker muscular wall in the left ventricle
• What are the roles of the blood vessels in the circulatory system?

  • Carry blood throughout the body
  • Direct blood flow to various organs
  • Facilitate gas and nutrient exchange
• What are the consequences of blocked coronary arteries?

  • Reduced blood supply to heart muscle
  • Risk of coronary artery disease
  • Potential for heart attack