If you are asking for cell biology, âChiasmaâ is a point of overlap of paired chromatids at which fusion and exchange of genetic material take place during prophase of meiosis. And if you are asking for Anatomy then, It is the X-shaped structure formed at the point below the brain where the two optic nerves cross over each other.
Symptoms Of Vagus Nerve Disorder. The vagus nerve innervates critical organs, such as the heart and lungs, making vagus nerve disorders serious. The symptoms of vagus nerve disorder can include cardiac, gastrointestinal, and sensory problems. Introduction to the Vagus Nerve The vagus nerve is the paired tenth cranial nerve that branches out from the brain and supplies parts of the gastrointestinal system such as the stomach, and parts of the respiratory system such as the lungs.
Autonomic neuropathy is nerve damage that affects some of your body's organ systems. 1  These include your heart and blood vessels, digestive system, urinary tract, sexual organs, sweat gland, and eyes. Here are some symptoms of nerve damage to key parts of your nervous system: 1  Cardiovascular system: feeling dizzy, lightheaded or faint when you stand up or sit down. 2  Digestive system: difficulty swallowing, nausea, vomiting, bloating, constipation, and episodes of severe diarrhea.