In which part of the human body are villi present?

Correct option is B

The correct answer is (b) Small intestine.

Correct Answer Explanation:

• Villi are tiny finger-like projections found in the lining of the small intestine. They increase the surface area for absorption of nutrients from digested food into the bloodstream.
• Each villus contains capillaries and lymphatic vessels (lacteals), which help in the absorption of nutrients like amino acids, fatty acids, and sugars.
• The presence of villi in the small intestine significantly enhances its ability to absorb nutrients efficiently.
• Diseases like Celiac disease can affect the villi, leading to impaired nutrient absorption.

Information about Other Options:

• (A) Liver – Incorrect. The liver is involved in producing bile and metabolizing nutrients, but it does not have villi.
• (C) Kidney – Incorrect. The kidneys filter blood to remove waste and excess substances, but they do not contain villi.
• (D) Eye – Incorrect. The eye is the organ responsible for vision, and it does not contain villi. The structures in the eye include the cornea, retina, and lens, but no villi.

Information Booster:

Human Digestive System:

The human digestive system breaks down food into nutrients for energy, growth, and cell repair.

Here's a brief overview:

• Mouth: Food is mechanically broken down by teeth and mixed with saliva, which contains enzymes that start carbohydrate digestion.
• Esophagus: Food moves from the mouth to the stomach via peristalsis (muscle contractions).
• Stomach: Gastric juices containing acid and enzymes (like pepsin) digest proteins and churn food into chyme.
• Small Intestine: The duodenum receives bile and enzymes to digest fats, proteins, and carbs. The jejunum and ileum absorb nutrients like amino acids and glucose.
• Liver: Produces bile for fat digestion and processes nutrients.
• Pancreas: Releases digestive enzymes and bicarbonate to neutralize stomach acid.
• Large Intestine: Absorbs water and electrolytes from remaining food, forming a stool.
• Rectum and Anus: Stool is stored in the rectum and expelled through the anus.