the heart

• The right atrium receives deoxygenated blood from the vena cava.
• What type of blood does the right side of the heart deal with?

  De-oxygenated blood
• What type of blood does the left side of the heart deal with?

  Oxygenated blood
• Why does the left ventricle have a thicker wall than the right ventricle?

  Because it has to pump blood all around the body
• What is the primary function of the right ventricle?

  To pump blood to the lungs
• How do the right and left sides of the heart relate to the person whose heart it is?

  They refer to the right and left of the person, not the viewer's right and left
• What is the role of valves in the heart?

  • Ensure one-way flow of blood
  • Prevent backflow from ventricles to atria
  • Prevent blood from being sucked back into the heart when it relaxes
• What are the two types of valves mentioned in the heart?

  Atrioventricular valves and semilunar valves
• What happens when the left atrium contracts?

  It forces the bicuspid valve open
• What occurs when the left ventricle contracts?

  It forces the bicuspid valve shut and opens the semilunar valve
• Where does oxygenated blood flow from before entering the left atrium?

  From the lungs via the pulmonary veins
• What is the final destination of blood after it flows out of the left ventricle?

  It flows out of the heart via the aorta
• Describe the flow of oxygenated blood through the heart.

  1. Oxygenated blood enters the left atrium via pulmonary veins.
  2. Left atrium contracts, opening the bicuspid valve.
  3. Blood flows into the left ventricle.
  4. Left ventricle contracts, closing the bicuspid valve and opening the semilunar valve.
  5. Blood exits the heart through the aorta.
• The left ventricle pumps oxygen-rich blood to the rest of the body through arteries, while the right ventricle pumps deoxygenated blood to the lungs through pulmonary veins.
• Blood flows into the right atrium from the superior and inferior venae cavae (large veins that carry blood from the upper and lower parts of the body).
• Blood flows into the right atrium via the superior and inferior venae cavae (SVC and IVC) and then passes through the tricuspid valve into the right ventricle.
• From the right ventricle, blood is pumped out through the pulmonary semilunar valve into the pulmonary trunk, which divides into two branches called the pulmonary artery.