Question

Do Humans Have a Closed Circulatory System?

Answer 1

Circulatory system in humans:

A closed circulatory system is far more efficient at delivering blood and nutrients to complex multicellular animals such as humans.

1. This system can also generate pressure, which allows the blood to move forward and deliver more oxygen.
2. As a result, animals with closed circular systems have a higher metabolic rate than animals with open circular systems.