AN INTRODUCTION TO SEBACEOUS GLANDS.

The sebaceous glands in man are aggregates of various-sized acini that empty into a duct. Glandular configuration is determined by the relative size of the glands in any given area and the number of other glands in the same area, that is by the amount of crowding they are subjected to and by the nature of the dermis in which they grow. Regardless of differences in size, shape, or position, their cellular morphology and sequence of differentiation are similar but not necessarily identical. Sebaceous differentiation is the orderly synthesis, segregation, and accumulation of lipid droplets which culminate in enlarged, misshapen cells that fragment to form sebum.