Hi Sir! Just wanna start by saying that this is by far my favorite histology slide! This is an example of Simple Columnar Ciliated Epithelium. Simple columnar epithelium are tissues made of a single layer of long epithelial cells. The cells of this epithelium are arranged in a neat row with the nuclei at the same level, near the basal end. Generally, Simple Columnar epithelium plays a very important role in PLAS; protection, lubrication, absorption, and secretion. Columnar epithelia with microvili secrete digestive enzymes and absorb digested food. On the other hand, columnar epithelia with cilia aid in the movement of mucus and reproductive cells. In this case (fallopian tube) its ciliated epithelium helps in propelling the ova or egg towards the uterus. Simple columnar epithelia are found in the stomach, small intestine, large intestine, rectum, fallopian tubes, endometrium, and respiratory bronchioles. In essence, they are found in parts of the respiratory, digestive and reproductive tracts where mechanical abrasion is low, but secretion and absorption are important.