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.
London's most iconic building, St Paul's Cathedral, was designed by English architect Sir Christopher Wren. Sitting at the top of Ludgate Hill, the highest point in the City of London, its famous dome is one of the world's largest, measuring nearly 112 metres high.