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 collecting duct contains two cell types, called principal cells and intercalated cells. Principal cells are predominantly responsible for sodium reabsorption and potassium secretion in the kidney. This process is stimulated in the principal cells by the action of the hormone aldosterone.ike in other organs, cells of the kidney can be divided into cells that make up the functional part of the kidney (called the parenchyma) and cells that make up the connective tissue and supporting structure of the kidney (the stroma).