why is the pericycle part of the vascular cylinder
Pericycle Although it is composed of non-vascular parenchyma cells, it is still considered part of the vascular cylinder because it arises from the procambium as do the vascular tissues it surrounds.
Artery An artery (plural arteries) (from Greek ἀρτηρία (artēria), meaning 'windpipe, artery')[1] is a blood vessel that takes blood from the heart to all parts of the body. Most arteries carry oxygenated blood; the two exceptions are the pulmonary and the umbilical arteries, which carry deoxygenated blood to the organs that oxygenate it. The effective arterial blood volume is that extracellular fluid which fills the arterial system.