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The human body is a complex and intricate system that is capable of amazing feats. The brain, which is housed within the skull, processes information and controls every function of the body. It is estimated that the average person uses about 10% of their brain's capacity. The heart pumps blood throughout the body, supplying it with oxygen and nutrients. The lungs take in oxygen and expel carbon dioxide through a process called respiration. The digestive system breaks down food into its various components, which are then absorbed by the body. The skin is the largest organ in the body and plays a crucial role in regulating temperature and protecting against external damage. The muscles allow for movement and flexibility, while the bones provide structural support. The senses of sight, sound, hearing, taste, and smell work together to interpret information from the environment. The endocrine system produces hormones that regulate various bodily functions such as growth and development.