Histology is the study of tissues. There are only four primary tissue types: epithelial, connective, muscular and neural. For now we will only concentrate on epithelial and connective tissues. Epithelial tissue covers exposed surfaces or lines internal cavities or passageways and forms glands.
The Cathedral of Learning in Bangkokâs Assumption University soars to a towering 522 feet (159 meters) in height. Built in 2002, the 39-story structure mimics the design of the University of Pittsburghâs Cathedral of Learning â albeit in a more postmodern style.
From medieval Bologna to the 21st century's Burj Khalifa, being tallest is mostly about status and wealth rather than practicality. The towers of Bologna are slender, as much as 60 meters (150 feet) tall and were built by the rich for defense and as status symbols. No other site in Europe, or perhaps the world, had so many tall structures crowded together until the coming of skyscrapers in the late 19th century.