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1. What is the vestibule in the The space between the lips and the teeth.
oral cavity?
2. What is the function of the It anchors the upper and lower lips to the gums.
frenulum in the oral cavity?
3. What are the three main Incisors, canines, and molars.
types of teeth?
4. What is dentin? A hard yellowish tissue that makes up most of the tooth.
5. What is enamel? A noncellular secretion that covers the crown and neck of the tooth
and cannot regenerate.
6. What is cementum? A tissue that covers the root of the tooth and can regenerate.
7. What is the periodontal liga- A modified periosteum that anchors the tooth in the alveolus and
ment? allows slight movement.
8. What is the age range for the 6 to 9 months.
eruption of central incisors?
9. It covers the alveolar bone and supports the teeth.
, Anatomy and Physiology of the Human Digestive System
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What is the role of the gingi-
va?
10. What is the function of the It regulates the passage of food from the stomach to the duode-
pyloric sphincter? num.
11. What are the two main sub- Digestive tract and accessory organs.
divisions of the digestive sys-
tem?
12. What is the length of the di- Approximately 30 feet long.
gestive tract?
13. What is the primary function To digest food and mix it with gastric juices.
of the stomach?
14. What is the role of the It covers the small intestines like an apron.
greater omentum?
15. What is the function of the To produce saliva, which aids in digestion and oral hygiene.
salivary glands?
16. What are the three types of Parotid, submandibular, and sublingual glands.
extrinsic salivary glands?
17. What is the structure of the It consists of mucosa, submucosa, muscularis externa, and serosa.
stomach wall?
18. What is the role of the en- To regulate the functions of the gastrointestinal tract.
teric nervous system?