Hepatitis B: Symptoms. In many cases there are no symptoms in the early stages of hepatitis B infection. Many children and some adults do not develop any symptoms until complications, such as cirrhosis develop. Symptoms of hepatitis B can include flu-like symptoms, fever, headache, nausea, muscle aches and weakness.
The autonomic nervous system (ANS) is a very complex, multifaceted neural network that maintains internal physiologic homeostasis. This network includes cardiovascular, thermoregulatory, GI, genitourinary (GU), and ophthalmologic (pupillary) systems (see the following image).
The autonomic nervous system (ANS) consists of the sympathetic and parasympathetic nervous system. The sympathetic nervous system (SNS) descends to the intermediolateral and intermediomedial cells in the thoracolumbar regions of the spine, extending from TI to L2.