Solitary resin glands consisting of one or two dozen cells are most often at the tips of slender trichome stalks which form an extension of the plantamp;rsquo;s surface. These glands secrete an aromatic terpenoid containing resin with a very high content of cannabinoids, which collect under a thin membrane surrounding the secretory head cells. The resin contains a variety of constituents, any of which might play a role in the biological activities of the cannabis plant. Among these are at least 66 cannabinoids, along with various terpenoids and flavonoids. The cannabinoids make up around 80% of the resinous secretion of the glandular hairs, and are odorless, itamp;rsquo;s actually the terpenoid compounds that give cannabis its distinctive smell.
