For most Parkinson's patients, the cause lies somewhere in the middle. While many Parkinson's patients report one or more family members with the disease, it is not always clear that one or several genes are the cause.
In fish there are two aorta: the ventral aorta that carries blood to the gills, and a separate dorsal aorta that carries the blood to the body.This works well with a fish's two chambered heart.n fish there are two aorta: the ventral aorta that carries blood to the gills, and a separate dorsal aorta that carries the blood to the body.
What is a ventral thecal sac? A: The ventral thecal sac refers to the ventral, or front side of the thecal sac, which is a membrane that surrounds the spinal cord and some cerebrospinal fl... Full Answer > Filed Under: