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 ANS is the system of motor neurons that innervate the. smooth muscle, cardiac muscle, and glands of the body. By. controlling these effectors, the ANS regulates such visceral. functions as heart rate, blood pressure, digestion, and urina-. tion, which are essential for maintaining the stability of the.