<span>The autonomic nervous system
The autonomic nervous system (ANS) is the part of the peripheral nervous system that acts as a control system, functioning largely below the level of consciousness and controlling visceral functions. The ANS affects heart rate, digestion, respiratory rate, salivation, perspiration, pupillary dilation, micturition (urination), and sexual arousal. The ANS is classically divided into two subsystems: the parasympathetic nervous system (PSNS) and sympathetic nervous system (SNS).</span>
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Is this a question or an answer???
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phillip researched the types of birds in the area and their natural food prefetence it may be wrong
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Enzymes create chemical reactions in the body. They actually speed up the rate of a chemical reaction to help support life. The enzymes in your body help to perform very important tasks. ... Heat, disease, or harsh chemical conditions can damage enzymes and change their shape.
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a signal molecule locks to a receptor protein (like lock and key),causes shape change in receptor then creates a specific reaction inside the cell that eventually triggers the cell response. State where signal receptors may be located in target cells.
