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).
Noun. 1. ANS-the part of the nervous system of vertebrates that controls involuntary actions of the smooth muscles and heart and glands. autonomic nervous system. autonomic ganglion-any of the ganglia of the autonomic system whose unmyelinated fibers innervate the internal organs.