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.
The much larger ventral body cavity contains organs of the respiratory, cardiovascular, digestive, urinary, and reproductive systems. The relationships among the dorsal and ventral body cavities and their subdivisions are indicated in Figure 1-10 and shown in Figure 1-11.or example, because they are inside body cavities, the lungs, heart, stomach, intestines, urinary bladder, and many other organs can expand and contract without distorting surrounding tissues or disrupting the activities of nearby organs. The dorsal body cavity contains the brain and spinal cord.