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.
The two cellular structures found in animal cells but not in plant cells are the centrosome and the lysosome. The centrosome is the microtubule-organizing center of the cell, giving rise to the mitotic spindle. The lysosome is the cellular disposal system, breaking down unwanted materials from the cytoplasm. Keep Learning.