以下は「Wikipedia」の解説文となる。
Filiform papillae are the most numerous of the lingual papillae.[1] They are fine, small, cone-shaped papillae found on the anterior surface of the tongue.[3] They are responsible for giving the tongue its texture and are responsible for the sensation of touch. Unlike the other kinds of papillae, filiform papillae do not contain taste buds.[1] They cover most of the front two-thirds of the tongue's surface.[2]
They appear as very small, conical or cylindrical surface projections,[2] and are arranged in rows which lie parallel to the sulcus terminalis. At the tip of the tongue, these rows become more transverse.[2]
Histologically, they are made up of irregular connective tissue cores with a keratin–containing epithelium which has fine secondary threads.[2] Heavy keratinization of filiform papillae, occurring for instance in cats, gives the tongue a roughness that is characteristic of these animals.
These papillae have a whitish tint, owing to the thickness and density of their epithelium. This epithelium has undergone a peculiar modification as the cells have become cone–like and elongated into dense, overlapping, brush-like threads. They also contain a number of elastic fibers, which render them firmer and more elastic than the other types of papillae. The larger and longer papillae of this group are sometimes termed papillae conicae.
■ 写真やイラストを掲載しているサイト ■
・ イラストや写真を掲載しているサイト-Ⅰ
・ イラストや写真を掲載しているサイト-Ⅱ
・ イラストや写真を掲載しているサイト-Ⅲ
・ イラストや写真を掲載しているサイト-Ⅳ
