A Routine Colonoscopy Detects a Small Colorectal Polyp on the Colon

question 64

Multiple Choice

A routine colonoscopy detects a small colorectal polyp on the colon wall that has not reached adenoma status. Which of the following genes would you most likely predict to be mutated at this stage?

• A) APC
• B) p53
• C) ras
• D) antimetastasis gene

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Definitions:

Sphenoid

Wedge-shaped.

Appendicular Skeleton

The portion of the skeleton that includes the bones of the limbs and the supporting bone girdles (pectoral and pelvic) that connect them to the central body, or axial, skeleton.

Limbs

Extremities of the body used for movement and interaction with the environment, such as arms and legs in humans.

Girdles

Structures that connect the limbs to the axial skeleton, including the pelvic girdle and shoulder girdle.