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Difficulty: EasyAnimal Nutrition and Digestive System

Match each organ of the mammalian digestive tract with its primary physiological function in nutrition.

  • StomachSecretion of hydrochloric acid and initiation of protein digestion
  • Small intestineCompletion of chemical digestion and absorption of digested nutrients
  • Large intestineReabsorption of water and mineral salts from indigestible waste

Answer

Stomach matches with Secretion of hydrochloric acid and initiation of protein digestion; Small intestine matches with Completion of chemical digestion and absorption of digested nutrients; Large intestine matches with Reabsorption of water and mineral salts from indigestible waste.
Each digestive organ is correctly matched to its specific physiological role: the stomach initiates protein digestion in an acidic environment, the small intestine completes enzymatic breakdown and absorbs nutrient monomers, and the large intestine reabsorbs excess water and mineral salts.

Step-by-Step Solution

1
Identify the primary function of the stomach in mammalian digestion.
The stomach secretes gastric acid (HCl) and pepsinogen to begin chemical hydrolysis of proteins.
Gastric parietal cells produce HCl which lowers pH to activate pepsin.
2
Identify the primary function of the small intestine.
The small intestine is the chief site where enzyme digestion finishes and absorption of nutrient monomers occurs.
Villi and microvilli provide a broad surface area for active and passive uptake of nutrients.
3
Identify the primary function of the large intestine.
The large intestine absorbs remaining water and mineral salts to form solid feces.
Reabsorbing water maintains fluid balance in the organism.

Key Concept

Functions of mammalian alimentary canal organs
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Topics

Animal Nutrition and Digestive System

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