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.
Relative terms. Anterior-posterior and ventral-dorsal. - Anterior (Latin ante; before): is to be situated near or toward the front (first in movement) of the body. - Ventral: when something is said to be ventral, it means that it is closer to the front side of the body. For example, the eyes are ventral to the brain.. - Posterior (Latin post; after): is to be situated toward the back (last in movement) of the body. - Dorsal: when something is said to be dorsal, it means that it is closer to the back side of the body. For example, the brain is dorsal to the eyes. - In a quadruped the terms anterior and posterior are synonymous with cranial and caudal.