Which sequence describes the flow of blood through the two major loops of the cardiovascular system?

Question

Loop 1: blood vessels, lungs, blood vessels; Loop 2: blood vessels, body, blood vessels

Loop 1: lungs, heart, lungs; Loop 2: body, heart, body

Loop 1: lungs, blood vessels, lungs; Loop 2: body, blood vessels, body

Loop 1: heart, lungs, heart; Loop 2: heart, body, heart

Answer 1

The correct sequence that describes the flow of blood through the two major loops of the cardiovascular system is:

Loop 1: heart, lungs, heart; Loop 2: heart, body, heart.

In this sequence:

• Loop 1 refers to the pulmonary circulation, where deoxygenated blood is pumped from the heart to the lungs (to receive oxygen) and then back to the heart.
• Loop 2 refers to the systemic circulation, where oxygenated blood is pumped from the heart to the rest of the body and returned back to the heart.