Nervous tissue is the fundamental building block of the nervous system, responsible for coordinating and controlling various bodily functions. The three basic functions of nervous tissue are:
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Sensation: Nervous tissue receives sensory information from both the internal and external environment. This information is gathered by specialized sensory receptors, which then transmit signals to the brain and spinal cord for processing. Examples include feeling a hot stove or smelling a flower.
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Integration: The nervous system integrates sensory information and makes decisions based on it. This process involves analyzing incoming signals, comparing them with previous experiences, and generating appropriate responses. For instance, the brain decides to withdraw your hand from the hot stove after you feel the heat.
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Response: The nervous system initiates and executes appropriate responses to sensory input. This can involve muscle contractions, gland secretions, or other bodily actions. For example, the nervous system sends signals to your muscles to move your hand away from the hot stove.
These three functions work together to enable the nervous system to control our movements, thoughts, feelings, and overall body function.
