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Homeostasis is a maintenance of a constant internal environment.The human nervous system consists of central nervous system; brain and spinal cord and peripheral nervous system which is subdivided i...
Arteries are the blood vessels which deliver oxygen-rich blood from the heart to the tissues of the body. The outer layer of an artery is made of collagen fibers. The middle layer has smooth muscle and el...
The easiest way to understand the way that the heart works is to imagine a double pump with high pressure and low pressure tubing. One part of the pump is low pressure all the way, and that brings the blo...
Homeostasis is the physiological process of maintaining a condition such as temperature or chemicals in a normal range despite changes that occur everyday in the body. Usually, this is regulated by hormon...
water moves via the transportation stream, pulling it up through the xylem in the stem of the plant
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