Explanation:
Tay Sachs disease is a genetic disorder caused by the mutation in the gene which codes for the enzyme that breaks down the ganglioside in the brain and the spinal cord. The Tay Sachs disease proves fatal to lives as the mutation is involved in the enzyme involved in the metabolism in the brain and spinal cord.
The Sickle cell anaemia is a disease which is caused by the mutation in the gene which causes the change in the cellular structure. The shape of the red blood cells does not prove fatal not all the red blood cells are affected with this and some cells can transport the oxygen.
This has to do with blood pressure, blood leaving the right ventricle only has to travel through the pulmonary vessels and the lungs before returning to the heart.Therefore the r vent, does not pump it very hard, this creates a lower pressure, therefore the pulmonary vessels do not need to be as thick. However, the blood entering the aorta vent needs to travel a great distance throughout the body), it is pumped very hard in order for the blood to circulate. Thus the walls of the aorta need to be thicker in order to withstand the higher pressure.
Answer:
BRAINSTEM
Explanation:
The brainstem is the lower extension of the brain, located in front of the cerebellum and connected to the spinal cord. It consists of three structures: the midbrain, pons and medulla oblongata.
