Tooth Structure Worksheet - Grade 9 Biology
Explore the anatomy of a human tooth with this Grade 9 biology worksheet, covering internal and external structures and their functions.
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Tooth Structure - Grade 9 Biology
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Read each question carefully and answer to the best of your ability. Refer to the diagram provided for assistance.
Examine the diagram of the human tooth below and answer the questions that follow.
1. The outermost layer of the crown of a tooth is called the .
2. Below the enamel, the bulk of the tooth is made up of .
3. The soft tissue found in the center of the tooth, containing nerves and blood vessels, is the .
4. The part of the tooth that is embedded in the jawbone is known as the .
1. Which of the following is the hardest substance in the human body?
Dentin
Bone
Enamel
Cementum
2. What is the primary function of the pulp in a tooth?
Chewing food
Protecting the dentin
Providing nourishment and sensation
Anchoring the tooth to the gum
1. Cementum is a soft tissue that covers the crown of the tooth.
True
False
2. The periodontal ligament helps hold the tooth in its socket.
True
False
1. Describe the main difference in composition and function between enamel and dentin.
2. Explain why damage to the pulp of a tooth can be very painful.