the human body
Описание на Статията
the human body systems
Текст на Статията
- the nerveous system
- the circulatory system
- the skeletal system
- The nervous system is the major controlling, regulatory, and communicating system in the body. It is the center of all mental activity including thought, learning, and memory. Together with the endocrine system, the nervous system is responsible for regulating and maintaining homeostasis.
- the digestive system
- The circulatory system delivers oxygen and nutrients to cells and takes away wastes. The heart pumps oxygenated and deoxygenated blood on different sides. The types of blood vessels include arteries, capillaries and veins.
- The human skeletal system consists of all of the bones, cartilage, tendons, and ligaments in the body. Altogether, the skeleton makes up about 20 percent of a person's body weight. An adult's skeleton contains 206 bones.
- (alimentary canal) is a continuous tube with two openings: the mouth and the anus.digestive tract is divided into two major parts: The digestive system is the breakdown of food into small molecules, which are then absorbed into the body. The Digestion and absorption. digestion is digestive system of the function.
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