The Primary Function of the Gastrointestinal Tract Is Digestion and Absorption

question 188

Essay

The primary function of the gastrointestinal tract is digestion and absorption of nutrients. Describe the process of digestion and absorption of proteins, including the enzymes and transporters involved in this process.

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Definitions:

Antigens

Antigens are substances, often on the surface of pathogens, that are recognized by the immune system, triggering an immune response.

Antibodies

Protein molecules produced by the immune system in response to antigens, which they specifically bind to neutralize or destroy.

Erythrocytes

Red blood cells, which carry oxygen from the lungs to the rest of the body and return carbon dioxide for exhalation.

Leukocytes

White blood cells that are part of the body's immune system, helping to fight infection and other diseases.