4 of 15 Which is not a type of circulation? Pulmonary Systemic Atrial

## Step 1<br />The question is asking us to identify which of the given options is not a type of circulation in the human body. <br /><br />## Step 2<br />The human circulatory system consists of two main types of circulation: pulmonary circulation and systemic circulation. <br /><br />### **Pulmonary circulation** <br />This is the process where blood is pumped from the heart to the lungs and back. This is a part of the overall circulatory system.<br /><br />### **Systemic circulation** <br />This is the process where blood is pumped from the heart to the rest of the body and back. This is also a part of the overall circulatory system.<br /><br />## Step 3<br />The term "atrial" refers to the atria, which are the two upper chambers of the heart. However, there is no specific "atrial circulation" in the human body. The atria are part of the heart's structure, but they are not a type of circulation.