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Questions and Answers
What is the function of the digestive tract or gastrointestinal tract (GIT)?
What is the function of the digestive tract or gastrointestinal tract (GIT)?
What is the Vestibule in the mouth anatomy?
What is the Vestibule in the mouth anatomy?
What are the two parts of the palate in the mouth anatomy?
What are the two parts of the palate in the mouth anatomy?
What is the esophagus subdivided into?
What is the esophagus subdivided into?
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Where does the esophagus enter into the abdominal cavity?
Where does the esophagus enter into the abdominal cavity?
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What is the layer of tissue around the esophagus called?
What is the layer of tissue around the esophagus called?
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What is the function of the esophagus in the digestive system?
What is the function of the esophagus in the digestive system?
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What is the location of the esophagus in relation to the trachea and heart?
What is the location of the esophagus in relation to the trachea and heart?
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Study Notes
Anatomy of the Digestive System
- The digestive tract or gastrointestinal tract (GIT) consists of the mouth, pharynx, esophagus, stomach, small intestine, and large intestine, which work together to digest food and absorb necessary nutrients.
Mouth Anatomy
- The mouth consists of lips, vestibule, mouth cavity, gums, teeth, hard and soft palate, tongue, and salivary glands.
- The vestibule is a slit-like space bounded by the lips and cheeks externally, and the gums and teeth internally.
- The lips are two fleshy folds surrounding the mouth orifice.
- The mouth cavity includes the lips, the lining inside the cheeks and lips, the front two-thirds of the tongue, the upper and lower gums, the floor of the mouth under the tongue, the bony roof of the mouth, and the small area behind the wisdom teeth.
- The hard palate is the front part of the roof of the mouth, and the soft palate is the back part.
Esophagus
- The esophagus is a muscular tube with longitudinal and circular muscles that facilitate the passage of food into the stomach under nervous regulation.
- The esophagus is divided into three anatomical segments: cervical, thoracic, and abdominal.
- It lies posterior to the trachea and heart, passing through the mediastinum and the hiatus, an opening in the diaphragm, during its descent from the thoracic to the abdominal cavity.
- The esophagus lacks a serosal layer; the tissue surrounding it is called adventitia.
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Description
Learn about the structure and function of the digestive tract, including the mouth, pharynx, esophagus, stomach, and intestines. Understand the anatomy of the mouth and its components.
