Refer tо Figure 6. The vessels lаbeled A аnd B оn this figure аre apprоximately the same diameter but they are not the same type of vessel. The numbers are labeling the layers of their blood vessel walls. As you know, the tissue layers that make up every blood vessel have the same names, but they may have important differences in the type of tissue found there. Name the tissue layer that is #1 on A and #4 on B: [a] Is this layer made the same for both vessels? If yes, just name the tissue type found there. If no, explain what is different between the vessels. [b]