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The human form is a complex and intricate entity that has been shaped by millions of years of evolution. It consists of an incredibly diverse array of cells, tissues, and organs that work together to maintain homeostasis and support the functions necessary for life. The human body is made up of approximately 60 trillion cells, which are constantly being replaced throughout a person's lifetime. The skin is the largest organ in the human body, accounting for about 15% of total body weight and covering an area of approximately 22 square feet. It serves as a protective barrier against external factors such as sunlight, bacteria, and other pathogens. The skin also plays a crucial role in regulating body temperature through sweating and has sensory receptors that allow us to feel sensations like touch and pain. Human teeth are designed for mastication and support the digestive system by breaking down food into smaller pieces. They consist of hard enamel on the outside and softer dentin beneath, which is protected by the gums. The roots of teeth extend deep into the jawbone, anchoring them firmly in place.