Full-term human umbilical cord contains three blood vessels: two arteries coiled around a vein and surrounded by Wharton’s jelly. a mucous tissue with few mesenchymal stromal cells and abundant extracellular matrix. Umbilical vessels lack innervations. thus endothelial cells must play a role in the control of blood flow. https://lockdownsecuritycanada.shop/product-category/remote-bass-control/