1 Stratified signifies two or more layers of epithelial cells. 2  By convention, a stratified epithelium is described according to the shape of cells on its free surface. 3  Regardless of whether the surface cells are squamous, cuboidal, or columnar, the underlying cells are usually cuboidal. A columnar epithelium is often associated with secretion or absorption.  2 Glandular describes epithelial tissue found in glands and specialized for exocrine or endocrine secretion.  3 Transitional describes a specialized type of epithelium which lines urinary passages.
Discover the historic South Street Seaport district of New York City on this guided walking tour. This thriving area features some of the oldest architecture in downtown Manhattan, including renovated original mercantile buildings, plus modern tourist malls with food, shopping and nightlife.
The walking tour begins at Embarcadero Marina Park, where you are surrounded by the bay on three sides. After passing the shops of Seaport Village, you walk by the piers of commercial fishing boats. Next you can visit the San Diego Aircraft Museum.Passing the harbor cruise boats, you arrive at the San Diego Maritime Museum, where there are several historic ships to explore.s you leave the pier, you can see a Visitor Information Center on the other side of Harbor Drive. This is run by the San Diego Convention and Visitors Bureau, and provides information about all of San Diego County. Walk to the left, heading north. Immediately on your left is the dock for the San Diego Bay Ferry.