Autonomic Nervous System PDF

The autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiologic processes including heart rate, blood pressure, respiration, digestion, and sexual arousal. Divisions of autonomic nervous system: 1.Sympathetic nervous system; 2. Parasympathetic ner...

The autonomic nervous system is a component of the peripheral nervous system that regulates involuntary physiologic processes including heart rate, blood pressure, respiration, digestion, and sexual arousal. Divisions of autonomic nervous system: 1.Sympathetic nervous system; 2. Parasympathetic nervous system; 3. Enteric nervous system. The origin of the sympathetic nervous system is found within the thoracic and lumbar segments of the spinal cord also known as the thoracolumbar division (T1 to L2,3). A purpose of sympathetic nervous system is to respond to dangerous or stressful situations From picture, you have to be able to identify what functions of sympathetic nervous system are. The purpose of parasympathetic nervous system is to allow digestion, i.e. general maintenance of your organism. The parasympathetic nervous system is composed of cells located in the brain stem and the sacral region of the spinal cord From picture, you have to be able to identify what functions of parasympathetic nervous system are How does sympathetic and parasympathetic nervous systems interact one with the other? While one is dominating, the other is being suppressed Enteric nervous system's purpose is to the determine the movements of the gastrointestinal tract, to regulate gastric acid secretion, changes in local blood flow and the gut hormones release, and to interact with the immune system in the gut.