`Oδηγόζ (The Guide) is the most famous work of Anastasios of Sinai, the theological writer from the 7th-8th century. It is some sort of a handbook for fighting the heresies, in the first place Monophysitism and Monotheletism. Anastasios is discussing the terms, i.e. the categories, which the believer should use if he wants to be orthodox. In the second chapter Anastasios brings the definitions of theological technical terms which he will be using in his polemics. To strengthen his argumentation he quotes more than 120 etymologies of different words. Among them are 17 etzmologies of the names of the parts of human body. We are talking about some of them in this work. [Projekat Ministarstva nauke Republike Srbije, br. 1777032: Tradicija, inovacija i identitet u vizantijskom svetu]