After all, a nail is sharp, and the inside of the nose is sensitive. Putting a foreign object deep into your nasal cavity isn't particularly comfortable, and it can be certainly painful when the performer is learning to do the trick. However, another obstacle -- sneezing -- can be harder to overcome.
Osteoclasts are the bone cell that destroys bone. This allows bone  remodeling, and allows the skeletal system to act as a reservoir  for minerals to maintain blood mineral â¦ levels. Bone cells that are involved in reabsorption and breakdown of the  bone matrix are referred to as osteoclasts.
1 Metaplastic cells (immature squamous cells) New squamous cells at the squamocolumnar junction are continuously replacing columnar cells. 2  These new squamous cells are called metaplastic cells.3  The area of cell replacement is called the transformation zone. The normal cervix has two types of cells on the surfaceâsquamous cells and columnar (glandular or mucus producing) cells. 2  Additionally, new squamous cells are identified as metaplastic cells.