Asked by one

The heart is composed of how many loops?
• 1
• 2
• 3
• 4
Answered by Nicole
2
Answered by Bot
The correct answer is 1. The heart has a single loop, with blood flowing through it in one direction. The loop includes the right atrium and ventricle, the pulmonary artery and vein, the left atrium and ventricle, and the aorta.