Heart

Path of Blood

1. Systemic Circulation:

   • Blood travels from the heart to the body and back.

   • Arteries: Carry oxygenated blood away from the heart.

   • Veins: Return deoxygenated blood to the heart.

2. Pulmonary Circulation:

   • Blood travels from the heart to the lungs and back.

   • Pulmonary Artery: Carries deoxygenated blood to the lungs.

   • Pulmonary Vein: Carries oxygenated blood back to the heart.

Parts of the Heart

1. Atria:

   • Upper chambers that receive blood.

   • Right Atrium: Receives deoxygenated blood from the body.

   • Left Atrium: Receives oxygenated blood from the lungs.

2. Ventricles:

   • Lower chambers that pump blood out.

   • Right Ventricle: Pumps deoxygenated blood to the lungs.

   • Left Ventricle: Pumps oxygenated blood to the body; strongest chamber.

3. Valves:

   • Prevent backflow of blood.

   • Atrioventricular (AV) Valves:

     • Tricuspid Valve: Between the right atrium and right ventricle.

     • Mitral (Bicuspid) Valve: Between the left atrium and left ventricle.

   • Semilunar Valves:

     • Pulmonary Valve: Between the right ventricle and pulmonary artery.

     • Aortic Valve: Between the left ventricle and aorta.

Cardiovascular System

1. Arteries:

   • Carry blood away from the heart.

   • Aorta: Largest artery, carries oxygenated blood from the left ventricle.

   • Arterioles: Smaller branches of arteries.

2. Veins:

   • Carry blood back to the heart.

   • Vena Cava: Largest vein, returns deoxygenated blood to the right atrium.

     • Superior Vena Cava: Returns blood from the upper body.

     • Inferior Vena Cava: Returns blood from the lower body.

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Path of Blood

1. Systemic Circulation:

   • Blood travels from the heart to the body and back.

   • Arteries: Carry oxygenated blood away from the heart.

   • Veins: Return deoxygenated blood to the heart.

2. Pulmonary Circulation:

   • Blood travels from the heart to the lungs and back.

   • Pulmonary Artery: Carries deoxygenated blood to the lungs.

   • Pulmonary Vein: Carries oxygenated blood back to the heart.

Parts of the Heart

1. Atria:

   • Upper chambers that receive blood.

   • Right Atrium: Receives deoxygenated blood from the body.

   • Left Atrium: Receives oxygenated blood from the lungs.

2. Ventricles:

   • Lower chambers that pump blood out.

   • Right Ventricle: Pumps deoxygenated blood to the lungs.

   • Left Ventricle: Pumps oxygenated blood to the body; strongest chamber.

3. Valves:

   • Prevent backflow of blood.

   • Atrioventricular (AV) Valves:

     • Tricuspid Valve: Between the right atrium and right ventricle.

     • Mitral (Bicuspid) Valve: Between the left atrium and left ventricle.

   • Semilunar Valves:

     • Pulmonary Valve: Between the right ventricle and pulmonary artery.

     • Aortic Valve: Between the left ventricle and aorta.

Cardiovascular System

1. Arteries:

   • Carry blood away from the heart.

   • Aorta: Largest artery, carries oxygenated blood from the left ventricle.

   • Arterioles: Smaller branches of arteries.

2. Veins:

   • Carry blood back to the heart.

   • Vena Cava: Largest vein, returns deoxygenated blood to the right atrium.

     • Superior Vena Cava: Returns blood from the upper body.

     • Inferior Vena Cava: Returns blood from the lower body.