Blemishes are caused due to hormonal changes, hereditary factors, stress, lack of proper nourishment. When the pore is clogged by natural body oils, the pores can get infected by bacteria and develop into black heads or white heads. If you prick or squeeze the acne lesion it will lead to scars or minor blemishes.
Making the world better, one answer at a time. Endothelial and epethelilal cells are the two different cell types which sandwich together the tissue. On the blood side is the endothelial cells (endo, meaning inside), and on the outer side are the epethelial cells.or example the epethelial cell layer are the cells that coat the intetestine wall, and thus absorb nutrients and the the endothelial cells are the cells that face the blood,and release those nutrients into the blood.
Epithelia are tissues consisting of closely apposed cells without intervening intercellular substances. Epithelia are avascular, but all epithelia grow on an underlying layer of vascular connective tissue. The connective tissue and the epithelium are separated by a basement membrane. Epithelium covers all free surfaces of the body. Epithelium also lines the large internal body cavities, where it is termed mesothelium.