Venules are the compositions, which directly follow each capillary bed. Thus, after gas exchange, the blood travels next in the venules.
The venules refers to a small blood vessel in the microcirculation, which permits deoxygenated blood to return from capillary beds to bigger blood vessels known as veins. The venules varies from 8 to 100 micrometer in diameter and are produced when capilaries gathers together.