Which Structural Component of the Gastrointestinal Tract Is Within the Muscularis

question 31

Multiple Choice

Which structural component of the gastrointestinal tract is within the muscularis externa and controls the contractions that cause motility?

• A) muscularis mucosae
• B) submucosal plexus
• C) myenteric plexus
• D) lumen

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Definitions:

Lewy Bodies

Abnormal aggregates of protein that develop inside nerve cells, contributing to Parkinson's Disease, Dementia with Lewy Bodies, and other neurological disorders.

Parkinson Disease

A neurodegenerative disorder characterized by motor symptoms such as tremors, stiffness, and slowed movement due to the loss of dopamine-producing neurons.

Down Syndrome

Chromosomal abnormality resulting in intellectual impairment and other abnormalities, usually caused by an extra chromosome 21.

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A condition characterized by a decrease in the size or density of the cerebral cortex, often associated with aging or neurodegenerative diseases.