cambium

• Nom désignant le tissu méristématique des plantes vasculaires responsable de la croissance secondaire, ou la couche interne du périoste dans les os.

A noun referring to a layer of tissue in vascular plants responsible for secondary growth, or the inner layer of the periosteum in bones.

1. Plant tissue layerC2formalscientific

   A thin layer of actively dividing cells located between the xylem and phloem in most vascular plants, responsible for secondary growth, increasing the diameter of stems and roots.

   cambium

   • The cambium produces new cells that become xylem and phloem.
   • During spring, the cambium is particularly active, forming new wood.
   • Tree rings are formed by the seasonal activity of the cambium.

2. Bone layerC2formalmedical

   The inner layer of the periosteum, a membrane that covers bones, containing cells that help in bone growth and repair.

   Couche ostéogène du périoste

   • The cambium layer of the periosteum is essential for bone healing after a fracture.
   • Osteoblasts in the cambium deposit new bone tissue.
   • Injury to the cambium can impair bone regeneration.