Structure
The apocrine gland comprises a glomerulus of secretory tubules and an excretory duct that opens into hair follicle; on occasion, an excretory duct opens to the skin surface next to the hair. The gland is large and spongy, located in the subcutaneous fat deep in the dermis, and has a larger overall structure and lumen diameter than the eccrine sweat gland. Unlike eccrine secretory tubules, secretory tubules of the apocrine gland are single-layered (lacking ductal cells), vary in diameter from place to place, and sometimes branch off into multiple ducts. The tubules are wrapped in myoepithelial cells, which are more developed than their eccrine gland counterparts.
Read more about this topic: Apocrine Sweat Gland
Famous quotes containing the word structure:
“Who says that fictions only and false hair
Become a verse? Is there in truth no beauty?
Is all good structure in a winding stair?
May no lines pass, except they do their duty
Not to a true, but painted chair?”
—George Herbert (1593–1633)
“Each structure and institution here was so primitive that you could at once refer it to its source; but our buildings commonly suggest neither their origin nor their purpose.”
—Henry David Thoreau (1817–1862)
“What is the most rigorous law of our being? Growth. No smallest atom of our moral, mental, or physical structure can stand still a year. It grows—it must grow; nothing can prevent it.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)