The Movement of Chyme from the Stomach into the Small

question 54

Multiple Choice

The movement of chyme from the stomach into the small intestine is regulated by the:

• A) pancreas.
• B) lower esophageal sphincter.
• C) ileocecal valve.
• D) duodenum.
• E) pyloric sphincter.

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Definitions:

Polyphyletic

A term describing a group of organisms that are classified together but do not share a recent common ancestor.

Homoplastic

Exhibiting similarity in appearance due to convergent evolution rather than ancestry.

R. H. Whittaker

An American ecologist famous for proposing the five kingdom classification of organisms in 1969.

Five-kingdom Classification

A system of categorizing all living organisms into five groups: Monera, Protista, Fungi, Plantae, and Animalia.