Circulatory System 1 - Heart

• 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 role does blood play in the circulatory system?

  It carries oxygen, nutrients, and waste products
• How do blood vessels function in the circulatory system?

  They hold and direct blood around the body
• What is the function of the heart in the circulatory system?

  To pump blood and ensure flow
• Why is it called a double circulatory system?

  It contains two separate circuits
• What are the two circuits in the 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
• What is the role of the atrio-ventricular valves?

  To ensure blood flows in one direction
• What are the two types of chambers in the heart?

  Atria and ventricles
• How are the left and right sides of the heart labeled?

  According to the person's perspective
• Which chamber of the heart has a thicker muscular wall?

  Left ventricle
• Why does the left ventricle have a thicker wall?

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

  Vena cava
• What type of blood flows into the right atrium?

  Deoxygenated blood
• What happens when the right atrium fills with blood?

  It contracts and pumps blood to the right ventricle
• What does the pulmonary artery do?

  It carries blood to the lungs
• How does blood become oxygenated?

  By flowing through the lungs
• What carries oxygenated blood from the lungs to the heart?

  Pulmonary vein
• What happens when the left atrium contracts?

  It pumps blood into the left ventricle
• What is the largest artery in the body?

  Aorta
• What does the aorta do?

  It carries blood around the body
• What happens to blood after it delivers nutrients and gases?

  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 are the main components of the circulatory system?

  • Heart
  • Blood vessels
  • Blood
• Describe the process of blood circulation in the body.

  1. Blood is pumped from the heart to the lungs (pulmonary circuit).
  2. Blood becomes oxygenated in the lungs.
  3. Oxygenated blood returns to the heart.
  4. Blood is pumped from the heart to the body (systemic circuit).
  5. Blood delivers nutrients and gases to tissues.
  6. Deoxygenated blood returns to the heart.
• What are the functions of the heart's chambers and valves?

  • Atria: Receive blood from the body and lungs.
  • Ventricles: Pump blood to the lungs and body.
  • Atrioventricular valves: Ensure one-way blood flow.
• What is the significance of the coronary arteries?

  • Supply oxygenated blood to the heart muscle.
  • Essential for heart function and health.
  • Blockage can lead to serious conditions.