In our body, where does 90% of our total nutrients and mineral absorption take place?

Correct option is D

In the human body, 90% of total nutrient and mineral absorption takes place in the small intestine. This organ is specifically adapted for absorption with its large surface area provided by villi and microvilli.

Key points:
● The small intestine is divided into three parts: duodenum, jejunum, and ileum.
● Most macronutrients, vitamins, and minerals are absorbed in the small intestine.
● The villi and microvilli increase the surface area for efficient absorption.
● The small intestine works in conjunction with digestive enzymes and bile to break down food.
● The duodenum absorbs minerals and fats, while the jejunum and ileum absorb carbohydrates and proteins.
● Any disruption in the small intestine's function can lead to malabsorption disorders.

Additional Information:

• Kidney filters blood but is not involved in nutrient absorption.
• Large intestine absorbs water and some electrolytes.
• Stomach primarily digests proteins but does little absorption, except for alcohol and some drugs.