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Questions and Answers
Which part of the large intestine has an S-shaped structure?
Which part of the large intestine has an S-shaped structure?
What is the correct sequence of the large intestine from proximal to distal?
What is the correct sequence of the large intestine from proximal to distal?
Which of the following is NOT a function of the anal canal?
Which of the following is NOT a function of the anal canal?
What is the relationship between the rectum and the anus?
What is the relationship between the rectum and the anus?
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Which of the following is the correct description of the descending colon?
Which of the following is the correct description of the descending colon?
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What is the main function of the sigmoid colon?
What is the main function of the sigmoid colon?
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Which of the following is NOT a structure of the large intestine?
Which of the following is NOT a structure of the large intestine?
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Study Notes
Digestive System
- The digestive system has several parts that work together to break down food into smaller molecules that can be absorbed and utilized by the body.
Salivary Glands
- There are three pairs of salivary glands: Parotid gland, Submandibular gland, and Sublingual gland.
- Saliva produced by these glands contains enzymes and proteins, including Salivary Amylase, which breaks down starch.
Esophagus
- The esophagus is a 25cm long muscle tube that connects the mouth to the stomach.
- Its primary function is to transport food from the mouth to the stomach.
- The upper part of the esophagus secretes mucous to aid in the passage of food.
Stomach
- The stomach has gastric glands that secrete gastric juice, creating an acidic environment with a pH between 1.5-3.5.
- This acidity is necessary for the action of Pepsin enzyme, which breaks down proteins.
- The stomach needs a mucosal barrier to protect itself from the acidic environment, which is achieved through mucus secretion.
Large Intestine
- The large intestine consists of four parts: Transverse colon, Descending colon, Sigmoid colon (S-shaped), Rectum, and Anal canal (terminal part of the large intestine, just above the anus).
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Description
Test your knowledge of the digestive system, its functions, and its various parts, including the accessory organs. Identify and recognize the different components and their roles in the digestion process.
