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.
A deep sulcus (anterior median fissure) runs on the ventral side of the spinal cord. Its dorsal counterpart is the rather flat posterior median sulcus. Laterally on both sides of the anterior median fissure the anterolateral sulci mark the exits of the anterior roots.The posterior roots enter the spinal cord through the posterolateral sulci on the dorsal side.The spinal ganglia which contain the perikarya (cell bodies) of the sensory neurons are located within the posterior roots.he posterior roots enter the spinal cord through the posterolateral sulci on the dorsal side. The spinal ganglia which contain the perikarya (cell bodies) of the sensory neurons are located within the posterior roots.