Villi are finger-like structures found in the

Step 1: Analyze the question The question asks where villi (finger-like projections) are found in the body.

Step 2: Explain the concept Villi (singular: villus) are tiny finger-like projections that line the inner wall of the small intestine, mainly in the ileum and jejunum. Their job is to increase the surface area for absorption of digested food.

Features of a villus that help absorption:

• Thin, one-cell-thick epithelium, so digested food diffuses quickly
• A rich network of blood capillaries, which carry away glucose and amino acids
• A lymph vessel called a lacteal, which absorbs fatty acids and glycerol
• Microvilli on the surface cells, which increase the surface area even more

Step 3: Check each option

• A. Large intestine: it absorbs mainly water and salts and has no villi.
• B. Rectum: it stores faeces and has no villi.
• C. Small intestine: this is where digested food is absorbed, and it has villi.
• D. Stomach: it has gastric folds (rugae) and gastric glands, not villi.
• E. Tongue: it has papillae with taste buds, which are not villi. Don't confuse papillae with villi.

Step 4: Answer The correct option is **C.

Tip: Villi = Very good at absorption, in the Small intestine. Remember "Villi, Small, Surface area". The tongue has papillae, the small intestine has villi.