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.
Quote: Originally Posted by neckpatient. Each of our spinal nerves has two roots the ventral (front) root carries motor impulses from the brain and the dorsal (back) root carries sensory impulses to the brain.uote: Originally Posted by neckpatient. Each of our spinal nerves has two roots the ventral (front) root carries motor impulses from the brain and the dorsal (back) root carries sensory impulses to the brain.