Slide 1 
This is a low power view of the glass slide in your class set. The mucosa of the jejunum is thrown into plical folds (arrows) which are covered with the intestinal villi.

Slide 2
Regularly spaced in the valleys between the villi, and numbering some 2-3 per villus, are the straight, tubular intestinal glands or crypts of Lieberkuhn. Given individual variation, the average villus height (VH) to crypt height (CH) in the jejunum is about 6:1. This ratio should always be assessed on evaluating small bowel biopsies because many malabsorptive diseases are characterized by villus atrophy with subsequent decrease in the villus/crypt height ratio.