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.
Cologne Cathedral in Cologne, Germany. This cathedral has been a UNESCO World Heritage Site since 1996, and was added to the âWorld Heritage in Dangerâ list in 2004. It is the largest Gothic cathedral in Northern Europe and from 1880-1884 was the tallest building in the world.