PATHOLOGY

Detailed explanation-1: -Explanation: In the general circulation, the highest blood pressure is found in the aorta and the lowest blood pressure is in the vena cava. As this suggests, blood pressure drops in the general circulation as it goes from the aorta to the rest of the body.

Detailed explanation-2: -The blood flows to the heart follows the pattern of moving through arteries, arterioles, venules, and veins. The pressure gradually decreases from arteries to veins. Hence the weakest blood pressure occurs in veins.

Detailed explanation-3: -The superior and inferior vena cava have very low blood pressure compared to the arteries around the body. The pulmonary veins also contain less level of pressure because it is associated with the right region of the heart which only carries the blood towards the lungs.

Detailed explanation-4: -Blood pressure is highest at the start of its journey from the heart-when it enters the aorta-and it is lowest at the end of its journey along progressively smaller branches of arteries.