When we look at systemic and pulmonary circulation, it's important to understand their differences. These differences help us see how each one works.

1. Purpose:

   • Systemic Circulation: This helps deliver oxygen-rich blood to the whole body. You can think of it like a big highway that brings oxygen and nutrients to all our organs and tissues.
   • Pulmonary Circulation: This one focuses on moving oxygen-poor blood to the lungs. In the lungs, the blood gets rid of carbon dioxide and picks up new oxygen—kind of like a quick stop for a refill!

2. Pathway:

   • Systemic: Blood moves from the left side of the heart (the left ventricle) into the aorta and then travels to every part of the body.
   • Pulmonary: Blood goes from the right side of the heart (the right ventricle) to the pulmonary arteries, which lead to the lungs.

3. Pressure:

   • Systemic: The blood here moves under higher pressure, around 120 over 80.
   • Pulmonary: This system runs at lower pressure, about 25 over 10.

Each type of circulation has its own important job, working together to keep our hearts and bodies healthy!