1. Contains battery power source.
2. Fibreoptic scopes contain a fibreoptic bundle in the blade.
1. Base: attaches to handle
2. Tongue: usually perpendicular to the handle, can be either straight (for placement posterior to the epiglottis) or curved (for anterior placement); most are interchangeable.
3. Web: contains electrical connections and bulb.
4. Flange: forms proximal third of the blade.