Draw a labelled diagram of a longitudinal section through a mammalian tooth. - Leaving Cert Agricultural Science - Question b - 2010

To illustrate a longitudinal section through a mammalian tooth, follow these steps:

1. Draw the Outline: Start by sketching the shape of a tooth, showing the crown (top part) and the root (bottom part).

2. Label the Parts:

   • Crown: The upper part of the tooth that is visible.
   • Root: The part embedded in the jawbone.
   • Enamel: The hard, outer layer covering the crown.
   • Dentin: The layer beneath the enamel that makes up most of the tooth's structure.
   • Pulp Cavity: The central cavity containing nerves and blood vessels.
   • Gum: Tissue surrounding the tooth.
   • Cement: The substance that helps anchor the tooth to the jaw.
   • Blood Vessels: Indicate the blood vessels or named vessels supplying the tooth.

3. Final Touches: Ensure all parts are clearly labelled with lines pointing to the corresponding sections of the tooth.

This diagram provides a comprehensive view of the internal structure of a mammalian tooth.