1.2.4 Structure of the heart

• The heart lies above the diaphragm.


  True
• What is the function of the myocardium?

  Pumps blood
• Which chamber receives oxygenated blood from the lungs?

  Left Atrium
• What is the function of the pericardium?

  Protects the heart
• Match the heart layer with its function:

  Pericardium ↔️ Protects the heart

  Myocardium ↔️ Pumps blood

  Endocardium ↔️ Prevents clotting
• The right ventricle pumps deoxygenated blood to the lungs via the pulmonary artery.


  True
• Match the heart valve with its location:

  Tricuspid Valve ↔️ Right atrium to right ventricle

  Pulmonary Valve ↔️ Right ventricle to pulmonary artery

  Mitral Valve ↔️ Left atrium to left ventricle

  Aortic Valve ↔️ Left ventricle to aorta
• The right side of the heart handles deoxygenated blood, while the left side handles oxygenated blood.


  True
• Match the coronary artery with its function:

  Left Coronary Artery ↔️ Supplies left side of heart

  Right Coronary Artery ↔️ Supplies right side of heart
• Where is the heart located in the human body?

  Thoracic cavity
• Match the organ with its position relative to the heart:

  Lungs ↔️ Between the lungs in the mediastinum

  Diaphragm ↔️ Heart lies above it

  Sternum ↔️ Heart is behind the sternum

  Vertebral Column ↔️ Heart is in front of it
• The endocardium is the inner lining of the heart chambers.

  True
• The left ventricle pumps oxygenated blood to the body via the aorta
• The myocardium is the thick muscular layer of the heart
• Place the flow of blood through the heart chambers in the correct order:

  1️⃣ Right Atrium

  2️⃣ Right Ventricle

  3️⃣ Left Atrium

  4️⃣ Left Ventricle
• The left atrium receives oxygenated blood from the lungs via the pulmonary veins
• The tricuspid valve prevents backflow of blood from the right ventricle to the right atrium
• What blood vessel does the right side of the heart use to pump blood to the lungs?

  Pulmonary artery
• What condition can occur if the coronary arteries are blocked?

  Myocardial infarction
• The heart resides in a region called the mediastinum
• The outer protective sac of the heart is called the pericardium
• Order the flow of blood through the four chambers of the heart:

  1️⃣ Right Atrium

  2️⃣ Right Ventricle

  3️⃣ Left Atrium

  4️⃣ Left Ventricle
• Match the heart layer with its function:

  Pericardium ↔️ Protects and reduces friction

  Myocardium ↔️ Contracts to pump blood

  Endocardium ↔️ Provides a smooth surface for blood flow
• The endocardium provides a smooth surface for blood flow and prevents clotting.


  True
• What blood vessel carries deoxygenated blood from the body to the right atrium?

  Superior vena cava
• Which chamber of the heart pumps oxygenated blood to the body via the aorta?

  Left ventricle
• What is the function of the aortic valve?

  Prevents backflow of blood
• The left side of the heart pumps oxygenated blood to the body via the aorta