Define pumice. pumice synonyms, pumice pronunciation, pumice translation, English dictionary definition of pumice. n. A light, porous, glassy lava, used in solid form as an abrasive and in powdered form as a polish and an abrasive. tr.v. pumÂ·iced , pumÂ·icÂ·ing , pumÂ·icÂ·es...
Articular cartilage is a white, smooth tissue which covers the ends of bones in joints. It enables bones of a joint to easily glide over one another with very little friction. This establishes easy movement.Many areas of the body can contain this kind of cartilage.rticular cartilage is a white, smooth tissue which covers the ends of bones in joints. It enables bones of a joint to easily glide over one another with very little friction. This establishes easy movement.
Growth in length: A long bone grows in length my multiplication of cells in the epiphyseal plate of cartilage. The cartilage cells divide and increase in number. The zone of active division in the epiphyseal plate of cartilage lies towards the epiphysis (end of the bone). long bone grows in thickness by multiplication of cells in the deeper layer of periosteum. The cells lying in the deeper layer of periosteum are known as osteoblasts (bone forming cells). These cells divide continuously and form the osteocytes, thus increase the thickness of bone.