The is the part of the autonomic nervous system that arouses the body to mobilize it for action and thus is involved in the experience of stress.

sympathetic nervous system

Explanation:

The sympathetic nervous system is one of the parts of the autonomic nervous system that controls involuntary and unconscious body movement functions such as heart rate, perspiration rate, blood pressure and body metabolism.

The sympathetic nervous system is triggered to control the involuntary body functions when the body perceives a threat or distress. When his happen, the sympathetic nervous system initiates and increases the body metabolism to produce responses referred to as the “fight or flight” response thereby increasing body alertness. Such responses include increased heart rate, increased perspiration and breath rate, raise in blood sugar level etc .

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these macromolecules could either be amino acids, proteins or nucleic acids. they are responsible for the chemical changes and reactions that affects largely the cell and its composition. take for instance the cytoplasm of the cell where these organelles are settled. these simple organelles are composed of macromolecules which ignites and catalyses different functions that enables cells, in macro-perspective in motion and metabolism. in intestines for example, metabolism happens and breaking down parts of a food to simpler compounds that are used and these nutrients delivered throughout the body and again broken down by into smaller components.