Draw a labelled diagram.of the structures abundant in the small.intestine responsible for absorption of digested molecules?

1. Villi: Small finger-like projections that line the inner surface of the small intestine. They increase the surface area for absorption.

2. Microvilli: Tiny hair-like structures on the surface of the villi that further increase the surface area for absorption.

3. Capillaries: Small blood vessels located in the villi that absorb nutrients such as glucose and amino acids.

4. Lacteals: Lymphatic vessels located in the villi that absorb fats and fat-soluble vitamins.

5. Epithelial cells: Cells that line the surface of the villi and are responsible for absorbing nutrients from the digested food.

6. Goblet cells: Cells that secrete mucus to protect the lining of the small intestine and help with the movement of food.

7. Crypts of Lieberkuhn: Invaginations in the lining of the small intestine that contain stem cells responsible for regenerating the epithelial cells.

Diagram of Small Intestine Structures Responsible for Absorption

Labels:

- Villi: Finger-like projections that increase the surface area for absorption.
- Microvilli: Microscopic projections on the surface of villi that further increase the surface area.
- Enterocyte: Epithelial cells that line the villi and microvilli.
- Tight Junctions: Seal the spaces between enterocytes to prevent leakage of substances.
- Brush Border: A layer of glycoproteins on the surface of enterocytes that protects the cells and aids in absorption.
- Lacteal: Lymphatic vessels in the core of each villus that absorb lipids.
- Capillary: Blood vessels in the core of each villus that absorb nutrients.