Your nervous system is a network that sends signals between your brain and other parts of your body to control your body's movements and processes. This system includes your brain, spinal cord, and ...
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The integumentary system: Your skin, hair, nails, and glands
The skin is the body's largest organ and helps protect internal organs from harm. Hair helps protect the skin, regulates body temperature, and is part of the body's sensory system. Sweat glands help ...
Your sympathetic nervous system is one of the branches of your autonomic nervous system. It controls functions under unconscious control related to “fight or flight.” Your nervous system plays a ...
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