INNERSPACE IMAGING / SCIENCE PHOTO LIBRARY INNERSPACE IMAGING / SCIENCE PHOTO LIBRARY
Primate molar teeth. Light micrograph of a section through three molar teeth in the jaw of a primate. Teeth are mainly composed of dentine (purple/blue/green) beneath a surface coating of enamel (orange, partly worn away). In the centre of each tooth are crown cavities (orange) containing nerves and blood vessels. Extensions of the crown cavities, known as root canals, project into the roots of the teeth. The crown cavity and root canal are collectively called the pulp cavity. The teeth are embedded in the alveolar bone of the jaw. Molar teeth are used for grinding food prior to swallowing. Magnification: x3 when printed 10cm wide.
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