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Questions: Digestion & Absorption Video Lecture - NEET

FAQs on Questions: Digestion & Absorption Video Lecture - NEET

1. What is digestion and absorption?
2. What are the main organs involved in digestion and absorption?
Ans. The main organs involved in digestion and absorption are the mouth, esophagus, stomach, small intestine, and large intestine. These organs work together to break down food, extract nutrients, and eliminate waste.
3. How does the digestive system break down carbohydrates, proteins, and fats?
Ans. Carbohydrates are broken down into simple sugars by enzymes in the mouth and small intestine. Proteins are broken down into amino acids by stomach acid and enzymes in the stomach and small intestine. Fats are broken down into fatty acids and glycerol by enzymes in the small intestine.
4. What happens to the nutrients after they are absorbed?
Ans. After nutrients are absorbed, they enter the bloodstream and are transported to cells throughout the body. These nutrients are then used for energy, growth, repair, and various metabolic processes. Excess nutrients are stored in the liver, muscles, and adipose tissue for later use.
5. How does the small intestine maximize nutrient absorption?
Ans. The small intestine has a large surface area due to the presence of finger-like projections called villi and microvilli. These structures increase the surface area available for nutrient absorption. Additionally, the small intestine has specialized cells with transport proteins that facilitate the absorption of different nutrients such as glucose, amino acids, and fatty acids.
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