Most peptic ulcers are now known to be associated with
Correct answer: D. infection with the bacterium Helicobacter pylori
- A. an excess of bile in the stomach
- B. a shortage of hydrochloric acid
- C. eating too much fibre
- D. infection with the bacterium Helicobacter pylori
Explanation
Helicobacter pylori survives the acid by living under the mucus layer, and the inflammation it causes lets acid and pepsin damage the wall beneath, so most ulcers are cured with antibiotics together with an acid reducing drug. Stress and spicy food may aggravate the symptoms but are no longer regarded as the cause. Ulcers form where acid is present, so a shortage of acid cannot explain them.
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About Human Digestive System
The human digestive system breaks food into absorbable molecules through mechanical processing, enzyme action and chemical conditions along the alimentary canal. Questions cover the mouth, stomach, small and large intestines, liver, pancreas and associated secretions, including the digestion and absorption of carbohydrates, proteins, lipids, vitamins, minerals and water.
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