The referenced video briefly explains about the histology of the tongue with the help of the histological slides.If you want to do a quick revision of all the important points this is the video to begin with! 0:05 Introduction 0:10 location 0:25 epithelium of lower surface 0:31 papillae 0:50 types of papillae 1:00 diagram of the tongue 1:41 filiform papillae 2:01 fungiform papillae 2:16 circumvallate papillae 2:34 foliate papillae 2:43 taste buds