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.
Structure of a Typical Long Bone Long bones have a tubular bone shaft, consisting of a bone collar surrounding a hollow medullary cavity, which is filled with yellow bone marrow in adults. Epiphyses are at the ends of the bone, and consist of internal spongy bone covered by an outer layer of compact bone.ocation of Hematopoietic Tissue in Bones Hematopoietic tissue of bones, red bone marrow, is located within the trabecular cavities of the spongy bone in flat bones, and in the epiphyses of long bones.