Haustra in the colon serve to allow the colon to expand and elongate.

Prepare for your Anatomy and Physiology II Exam with our comprehensive exam resources. Utilize flashcards, multiple choice questions with hints, and detailed explanations. Boost your readiness for success!

Multiple Choice

Haustra in the colon serve to allow the colon to expand and elongate.

Haustra reflect the colon’s ability to distend and segment its contents. The saclike pouches formed by the taenia coli create spaces that stretch as fecal matter accumulates, allowing the colon to expand to accommodate a varying volume. In addition, haustral contractions mix contents and slow transit, which gives more time for water and electrolyte reabsorption to occur—central to the colon’s job of forming solid stools. This makes expansion (distension) the best described function of haustra. Proteins are mainly broken down earlier in the digestive tract, and the colon doesn’t secrete digestive enzymes; its primary absorption role is water and electrolytes, with some fermentation by gut bacteria contributing to short-chain fatty acids.

Haustra reflect the colon’s ability to distend and segment its contents. The saclike pouches formed by the taenia coli create spaces that stretch as fecal matter accumulates, allowing the colon to expand to accommodate a varying volume. In addition, haustral contractions mix contents and slow transit, which gives more time for water and electrolyte reabsorption to occur—central to the colon’s job of forming solid stools. This makes expansion (distension) the best described function of haustra.

Proteins are mainly broken down earlier in the digestive tract, and the colon doesn’t secrete digestive enzymes; its primary absorption role is water and electrolytes, with some fermentation by gut bacteria contributing to short-chain fatty acids.

More practice questions