Question

Name the parts 1 to 4 as indicated in the diagram.
Give the difference between the parts 1 and 2 based on:
i. the structure
ii. the nature of blood flowing through them.
​

Answer 1

Answer:

Arteries have smaller lumens than veins, a characteristic that helps to maintain the pressure of blood moving through the system. Together, their thicker walls and smaller diameters give arterial lumens a more rounded appearance in cross section than the lumens of veins.