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 Excretory System

Welcome back to our systems blogs! Take a quick trip to the bathroom before reading this one, its going to be long! The excretory system has the major function of excretion, which is the loss of nitrogen containing waste and byproducts of metabolic processes in the animal body. Major organs involved in this system include [...]