Tooth Structure Exploration
Explore the fascinating internal and external structures of a human tooth with this Grade 7 science worksheet.
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Tooth Structure Exploration
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Read each question carefully and answer to the best of your ability. Refer to the diagram provided when necessary.
Observe the diagram of the human tooth cross-section below.
1. What is the hardest substance in the human body, found on the outermost layer of the tooth?
2. Which part of the tooth contains nerves and blood vessels?
3. The part of the tooth that is visible above the gum line is called the:
Root
Crown
Neck
Pulp
4. What is the primary function of the incisors?
Grinding food
Tearing food
Cutting food
Crushing food
5. The soft tissue inside the tooth that contains blood vessels and nerves is called the .
6. is the bone-like substance that makes up the bulk of the tooth and surrounds the pulp.
7. Enamel is softer than dentin.
True
False
8. The cementum helps to anchor the tooth to the jawbone.
True
False
Match the tooth part with its description.
9. Enamel
a. Anchors tooth to jawbone
10. Dentin
b. Outermost, hardest layer
11. Pulp
c. Contains nerves and blood vessels
12. Cementum
d. Bone-like layer beneath enamel