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CXC - Caribbean Examinations Council Human and Social Biology: The Human Digestive System Flashcards

6 cards from real CXC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 6 CXC - Caribbean Examinations Council Human and Social Biology: The Human Digestive System flashcards as text

  1. What is the function of the pancreas in digestion?

    Answer: It secretes pancreatic juice containing enzymes and bicarbonate into the small intestine

    The pancreas secretes pancreatic juice rich in digestive enzymes (amylase, lipase, trypsin) and bicarbonate to neutralize stomach acid in the small intestine.

  2. What is the purpose of mucus secreted by the stomach lining?

    Answer: To protect the stomach wall from being digested by its own acid and enzymes

    Mucus forms a protective layer over the stomach lining that prevents the stomach's own hydrochloric acid and pepsin from digesting the stomach wall.

  3. Which of the following is a MECHANICAL process of digestion rather than a chemical one?

    Answer: Chewing (mastication) by the teeth

    Chewing is a mechanical process that physically breaks food into smaller pieces, increasing surface area, whereas chemical digestion involves enzymes breaking molecular bonds.

  4. What happens to glucose after it is absorbed through the wall of the small intestine?

    Answer: It enters the bloodstream and is transported to the liver via the hepatic portal vein

    Absorbed glucose passes into capillaries in the villi and travels through the hepatic portal vein to the liver, where it may be stored as glycogen or released into circulation.

  5. What is the role of the gallbladder in the digestive system?

    Answer: To store and release bile into the small intestine

    The gallbladder stores bile produced by the liver and releases it into the duodenum of the small intestine when fatty food is present.

  6. In the context of CXC Human and Social Biology, why is it important to understand the digestive system?

    Answer: Understanding digestion helps Caribbean students make informed dietary choices and relate bodily function to health and disease prevention

    CXC HSB emphasizes the digestive system because understanding how nutrients are processed empowers students to make healthier food choices and recognize diet-related diseases common in the Caribbean region.