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Which one of the following occurs only in the Lower Gastrointestinal (G.I.) tract?

Ingestion

Mastication

Deglutition

Defecation

1 answer

Defecation occurs only in the Lower Gastrointestinal (G.I.) tract. It is the process of eliminating waste from the body, specifically from the rectum and anus. The other options—ingestion, mastication, and deglutition—occur in the upper parts of the digestive system.