The Grayling Area. The Grayling area is a sanctuary for those who seek the great outdoors. When you're here, you enter âRiver Time Zoneââ where time has no meaning. Year round, Grayling offers casual adventures for outdoor enthusiasts.
circulatory system. n. 1. The system of structures in vertebrates consisting of the heart, blood vessels, and lymphatics, by which blood and lymph are circulated throughout the body. 2. A similar system by which a fluid, such as hemolymph, is distributed in other animals.
Microcirculation is the circulation of the blood in the smallest blood vessels, present in the vasculature embedded within organ tissues. This contrasts with macrocirculation, which is the circulation of blood to and from the organs.