The Circulatory System

The circulatory system has the major function of circulating blood that transports oxygen and nutrients throughout the body. Major organs are the lungs, heart, and blood vessels. The functional unit are the red blood cells. Red Blood Cell Mammals have a closed circulatory system called the cardiovascular system. The heart has one or two atria, [...]

The Respiratory System

Welcome back to the systems blogs! The respiratory system has the major function of gas exchange, the uptake of oxygen from the environment and the release of carbon dioxide into the environment. Organs imporant in this system are blood vessels, lungs, diaphragm, heart, and the nose. Alveoli are functional units in this system located in [...]