Question

The diagram given below is a section of the small intestinal mucosa showing villi; identify the parts denoted by numerals.

• A. 1. $\Rightarrow$ Lacteal, 2. $\Rightarrow$ Capillaries, 3. $\Rightarrow$ Crypts of Lieberkuhn, 4. $\Rightarrow$ Enterocytes.
• B. 1. $\Rightarrow$ Capillaries, 2. $\Rightarrow$ Crypts of Lieberkuhn, 3. $\Rightarrow$ Enterocytes, 4.$\Rightarrow$ Lacteal.
• C. 1. $\Rightarrow$ Enterocytes, 2. $\Rightarrow$ Lacteal, 3. $\Rightarrow$ Capillaries, 4. $\Rightarrow$ Crypts of Lieberkuhn
• D. 1. $\Rightarrow$ Crypts of Lieberkuhn, 2. $\Rightarrow$ Enterocytes, 3. $\Rightarrow$ Lacteal, 4. $\Rightarrow$ Capillaries

Answer 1

The correct option is C 1. $\Rightarrow$ Enterocytes, 2. $\Rightarrow$ Lacteal, 3. $\Rightarrow$ Capillaries, 4. $\Rightarrow$ Crypts of Lieberkuhn

The ultrastructure of human small intestine has numerous finger-like projections called microvilli. These are the structures, which greatly increase the surface area of digestion and absorption of food. They have

1.Enterocytes, absorptive epithelium made of columnar epithelium.

2.Lacteal, absorbs fats.

3.Capillaries, vasculature to transport all the nutrients

4.Crypts of Lieberkuhn, to produce the enzyme Enterokinase, for activation of other enzymes.