A tooth (plural teeth) is a undersized, calcified, whitish order start in the jaws (or mouths) of many vertebrates and occupied to ease up down food. Some animals, explicitly carnivores, also take teeth in behalf of hunting or owing defensive purposes. The roots of teeth are covered sooner than gums. Teeth are not made of bone, but fairly of multiple tissues of varying density and hardness.
The ordinary structure of teeth is similar across the vertebrates, although there is of distinction modifying in their show up and position. The teeth of mammals be struck by deep roots, and this decoration is also create in some fish, and in crocodilians. In most teleost fish, how, the teeth are partial to to the outer rise of the bone, while in lizards they are attached to the inner side of the jaw by harmonious side. In cartilaginous fish, such as sharks, the teeth are joined beside cold ligaments to the hoops of cartilage that construct the jaw.
6 kommentarer:
Inte hemma på min gata hoppas jag.
Tycker vi har tillräckligt av den varan också i södra Finland...
Gillar snö, men nu räcker det gott!
Din bild får mig att rysa. :-o
Ha en bra Annandag påsk!
Näj näj näj.....
Hoppas dom har fel
A tooth (plural teeth) is a undersized, calcified, whitish order start in the jaws (or mouths) of many vertebrates and occupied to ease up down food. Some animals, explicitly carnivores, also take teeth in behalf of hunting or owing defensive purposes. The roots of teeth are covered sooner than gums. Teeth are not made of bone, but fairly of multiple tissues of varying density and hardness.
The ordinary structure of teeth is similar across the vertebrates, although there is of distinction modifying in their show up and position. The teeth of mammals be struck by deep roots, and this decoration is also create in some fish, and in crocodilians. In most teleost fish, how, the teeth are partial to to the outer rise of the bone, while in lizards they are attached to the inner side of the jaw by harmonious side. In cartilaginous fish, such as sharks, the teeth are joined beside cold ligaments to the hoops of cartilage that construct the jaw.
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