Abbreviations Used For The Gastrointestinal Systems

After study of this chapter you should be able to:

1. Explain the function of the digestive system.

2. Label a diagram of the digestive tract, and describe the function of each part.

3. Label a diagram of the accessory organs, and explain the role of each in digestion.

4. Identify and use the roots pertaining to the digestive system.

5. Describe the major disorders of the digestive system.

6. Define medical terms used in reference to the digestive system.

7. Interpret abbreviations used in referring to the gastrointestinal system.

8. Analyze case studies concerning gastroenterology.

The function of the digestive system (Fig. 12-1) is to prepare food for intake by body cells. Nutrients must be broken down by mechanical and chemical means into molecules that are small enough to be absorbed into the circulation. Within cells, the nutrients are used for energy and for rebuilding vital cell components. Digestion takes place in the digestive tract proper, also called the alimentary canal or gastrointestinal (GI) tract. Also contributing to the digestive process are several accessory organs that release secretions into the small intestine. Food is moved through the digestive tract by peristalsis, wavelike contractions of the organ walls. Peristalsis also moves undigested waste material out of the body.

Oral cavity Sublingual gland Submandibular gland Pharynx Trachea

Liver (cut) Gallbladder

Duodenum

Common bile duct

Pancreas

Ascending colon

Cecum Appendix

Parotid gland

Parotid gland

Label Digestion Diagram

FIGURE 12-1. Digestive system. (Reprinted with permission from Cohen BJ, Wood DL. Memmler's The Human Body in Health and Disease. 9th Ed. Philadelphia: Lippincott Williams & Wilkins, 2000.)

Esophagus

Stomach Diaphragm

Spleen

Transverse colon

Small intestine

Descending colon

Sigmoid colon

Rectum Anus

FIGURE 12-1. Digestive system. (Reprinted with permission from Cohen BJ, Wood DL. Memmler's The Human Body in Health and Disease. 9th Ed. Philadelphia: Lippincott Williams & Wilkins, 2000.)

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Responses

  • michael
    Where can we find peristalsis in the human body?
    8 years ago

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