What is the main function of the crop in birds that possess this structure?
Correct answer: B. Temporary storage of feed
- A. Grinding hard feed
- B. Temporary storage of feed
- C. Absorbing bile salts
- D. Producing digestive enzymes
Explanation
The crop is an enlargement of the oesophagus that temporarily stores and moistens ingested feed. Grinding occurs mainly in the gizzard, whereas most enzymatic digestion occurs farther along the gastrointestinal tract.
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Covers the gross and microscopic structure of domestic animals, including bones, joints, muscles, organs, blood vessels and nerves. It explains how the respiratory, cardiovascular, digestive, urinary, nervous, endocrine and reproductive systems function, with attention to species differences and the relationship between anatomical structure and physiological processes.
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