Create an account to track your scores
and create your own practice tests:
Test: AP Biology
1. | Why are villi found in the small intestine, but not in the stomach? |
The small intestine uses the villi to increase its surface area and facilitate absorption. Absorption does not occur in the stomach.
The villi act in a cilia-like motion and move food down the small intestine. Movement in the stomach is generated by smooth muscle contractions.
The villi allow multiple areas where digestive enzymes can be released by the small intestine. The stomach does not release digestive enzymes.
The small intestine uses villi to adhere to the food particles entering from the stomach, while the stomach has no need for such adhesion.
Lucas
Certified Tutor
Certified Tutor
University of Alabama at Birmingham, Master of Science, Biomedical Sciences. University of Alabama at Birmingham, Bachelor of...
Popular Subjects
Physics Tutors in Philadelphia, Calculus Tutors in Denver, Statistics Tutors in Houston, English Tutors in Denver, Reading Tutors in Atlanta, Spanish Tutors in Washington DC, LSAT Tutors in Denver, Statistics Tutors in Boston, Algebra Tutors in Los Angeles, ISEE Tutors in Dallas Fort Worth
Popular Courses & Classes
GRE Courses & Classes in San Francisco-Bay Area, GRE Courses & Classes in Boston, ISEE Courses & Classes in Washington DC, MCAT Courses & Classes in Seattle, ACT Courses & Classes in Denver, LSAT Courses & Classes in Atlanta, LSAT Courses & Classes in Washington DC, SAT Courses & Classes in Boston, LSAT Courses & Classes in Phoenix, SSAT Courses & Classes in Denver
