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.
In addition to blood, the circulatory system moves lymph, which is a clear fluid that helps rid the body of unwanted material. The heart, blood, and blood vessels make up the cardiovascular component of the circulatory system.n addition to blood, the circulatory system moves lymph, which is a clear fluid that helps rid the body of unwanted material. The heart, blood, and blood vessels make up the cardiovascular component of the circulatory system.