Get ready to dive into the heart, blood, and vessels like never before. Each section is packed with visuals, videos, and interactive resources to make learning more engaging and meaningful.

Let the journey of blood flow begin! 🚀

Components: Heart, Blood, and Blood Vessels

• Heart: A strong muscular pump that keeps the blood flowing non-stop.

• Blood: The fluid that carries oxygen, nutrients, and waste products.

• Blood Vessels: Tubes (arteries, veins, capillaries) that act like highways for blood to travel around the body.

Main Chambers (4 total):

• Right Atrium – Receives deoxygenated blood from the body.

• Right Ventricle – Pumps deoxygenated blood to the lungs.

• Left Atrium – Receives oxygenated blood from the lungs.

• Left Ventricle – Pumps oxygenated blood to the whole body.

  
  

🔸 Main Blood Vessels:

• Vena Cava – Carries deoxygenated blood from the body to the right atrium.

• Pulmonary Artery – Carries deoxygenated blood from the heart to the lungs.

• Pulmonary Vein – Carries oxygenated blood from the lungs to the heart.

• Aorta – Sends oxygenated blood from the heart to the rest of the body.

  
  

🔸 Important Valves:

• Tricuspid Valve – Between right atrium and right ventricle; prevents backflow into atrium.

• Bicuspid (Mitral) Valve – Between left atrium and left ventricle; prevents backflow into atrium.

• Semilunar Valves – At the base of pulmonary artery and aorta; prevent blood from flowing back into ventricles.

  
  

🔸 Septum:

• Separates left and right sides of the heart.

• Prevents oxygenated and deoxygenated blood from mixing.

• Your heart beats about 100,000 times a day!

• A woman's heart typically beats faster than a man's.

• The heart can still beat outside the body for a short time if it has oxygen.

• The sound of your heartbeat is caused by valves opening and closing.

• An adult heart is about the size of a fist.

• Exercise at least 30 minutes a day.

• Eat more fruits, veggies, and whole grains.

• Avoid too much salt, sugar, and oily foods.

• Don’t smoke and limit sugary drinks.

• Get enough sleep and manage stress.