1.2.4 Structure of the heart

• Where is the heart located in the chest?

  Mediastinum
• The heart sits slightly to the right of the sternum.

  False
• The heart in women is slightly smaller
• The myocardium is the outermost layer of the heart.

  False
• The myocardium is responsible for the heart's contraction
• Order the flow of blood through the heart chambers:

  1️⃣ Right Atrium

  2️⃣ Right Ventricle

  3️⃣ Left Atrium

  4️⃣ Left Ventricle
• The right ventricle pumps deoxygenated blood to the lungs
• Which heart chamber pumps oxygenated blood to the rest of the body?

  Left Ventricle
• The tricuspid valve prevents backflow of blood from the right ventricle
• The heart valves open and close in a coordinated manner to ensure efficient blood flow.


  True
• The pulmonary valve prevents backflow from the pulmonary artery to the right ventricle
• The mitral valve is located between the left atrium and left ventricle.


  True
• Heart valves open to allow blood flow and close to prevent backflow
• Where is the heart located in the chest?

  Mediastinum
• The heart is smaller in women compared to men.


  True
• The middle, muscular layer of the heart is called the myocardium
• The epicardium is the outermost protective layer of the heart.


  True
• Which heart chamber receives deoxygenated blood from the body?

  Right Atrium
• The left atrium receives oxygenated blood from the lungs.


  True
• Match the heart valve with its function:

  Tricuspid Valve ↔️ Prevents backflow from right ventricle to right atrium

  Pulmonary Valve ↔️ Prevents backflow from right ventricle to pulmonary artery

  Mitral Valve ↔️ Prevents backflow from left ventricle to left atrium

  Aortic Valve ↔️ Prevents backflow from aorta to left ventricle
• Each heart valve opens to allow blood flow and closes to prevent backflow
• The pulmonary artery carries deoxygenated blood from the right ventricle to the lungs.


  True
• Which blood vessel carries oxygenated blood from the left ventricle to the body?

  Aorta
• What is the space between the lungs where the heart is located called?

  Mediastinum
• What is the function of the left ventricle?

  Pumps oxygenated blood to the body
• The endocardium is a thin inner lining of epithelial tissue.
• What is the function of the epicardium?

  Protects and lubricates heart
• Which heart chamber pumps deoxygenated blood to the lungs?

  Right ventricle
• Which heart chamber pumps oxygenated blood to the rest of the body?

  Left ventricle
• What is the location and function of the tricuspid valve?

  Between right atrium and right ventricle; prevents backflow into right atrium
• The mitral valve prevents backflow from the left ventricle into the left atrium.

  False
• The tricuspid valve prevents backflow into the right atrium.
• What is the function of the superior vena cava?

  Carries deoxygenated blood from upper body to right atrium
• The pulmonary veins carry oxygenated blood from the lungs to the left atrium.

  True
• The SA node is located in the upper part of the right atrium.
• The heart is located in the mediastinum between the lungs.


  True
• The right ventricle pumps deoxygenated blood to the lungs
• The heart sits slightly to the left of the sternum.


  True
• The middle, muscular layer of the heart is called the myocardium
• The left atrium receives oxygenated blood from the lungs.


  True