What are the fabrics of the pine trunk?

The trunk of a pine tree consists of several layers: the bark is a peculiar skin of the tree, which protects the tree from the effects of the external environment and participates in the regulation of respiration. Consists of outer cork and inner lubok layers. Lub – the inner layer of the bark, consisting of living cells, performs a conductive function from the crown to the roots. Cambium is a single-celled layer of living cells that ensures the growth of a tree in thickness. A tree ring is a layer of wood formed in a year. By counting the tree rings, you can find out how many years the tree has lived. The sap is the younger part of the trunk, more elastic than the core, but more prone to decay. The nucleus is formed due to the death of living cells of wood, the most valuable and durable part of it. Heart-shaped rays – transverse lines directed from the middle to the bark, serve for the passage of water, air and organic matter along the trunk. Pine, like all conifers, has resin passages, which give the wood a unique aroma.