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Introduction to the Digestive System quiz #4

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  • What processes are involved in digestion?
    Digestion involves both mechanical and chemical processes to break down food into absorbable nutrients.
  • What is not a function of the duodenum?
    It is where most nutrient absorption occurs
  • What is pancreatic lipase and what does it do?
    Pancreatic lipase is an enzyme that breaks down fats into fatty acids and glycerol.
  • Which germ layer gives rise to the lining of the digestive tract?
    The endoderm germ layer gives rise to the lining of the digestive tract.
  • You are most likely to find acidophiles in which part of the GI tract?
    Acidophiles are most likely found in the stomach due to its acidic environment.
  • Which cells produce pepsinogen?
    Chief cells produce pepsinogen.
  • Which of these is not an accessory organ of digestion? a) Liver b) Pancreas c) Gallbladder d) Esophagus
    d) Esophagus
  • Which recommendation will the nurse give about introducing solid foods in infants?
    The nurse will recommend introducing solid foods around 6 months of age, starting with iron-fortified cereals.
  • Which enzyme does not digest proteins?
    Amylase
  • Which pancreatic enzyme digests protein?
    Trypsin is a pancreatic enzyme that digests protein.
  • Which organ is not an accessory organ of the digestive tract?
    Esophagus
  • Which digestive organ has both endocrine and exocrine functions? a) Liver b) Stomach c) Gallbladder d) Pancreas
    d) Pancreas
  • What enzyme is responsible for digesting emulsified fats?
    Lipase is responsible for digesting emulsified fats.
  • Which enzyme listed is not an intestinal enzyme?
    d) Pepsin
  • During digestion, what is the role of the pancreas?
    The pancreas secretes digestive enzymes and bicarbonate to aid in digestion and neutralize stomach acid.
  • Which organ is not considered an accessory organ of digestion?
    d) Esophagus
  • Which process is not one of the main functions of the digestive system?
    c) Respiration
  • Which layer of the digestive tract is in direct contact with ingested food?
    The mucosa layer is in direct contact with ingested food.
  • Which organ is not an accessory structure of the digestive system?
    d) Esophagus
  • Which is not considered to be an accessory digestive organ? a) Liver b) Pancreas c) Gallbladder d) Esophagus
    d) Esophagus
  • What happens when pepsin enters the small intestine?
    Pepsin becomes inactive in the small intestine due to the higher pH environment.
  • What secretion converts pepsinogen to pepsin?
    Hydrochloric acid (HCl) in the stomach converts pepsinogen to pepsin.
  • Pancreatic amylase is important for the breakdown of what biological molecules?
    Pancreatic amylase is important for the breakdown of carbohydrates.
  • Which layer of the gastrointestinal tract wall contains the muscularis mucosae?
    The mucosa layer contains the muscularis mucosae.
  • Which organ is not considered an accessory digestive organ? a) Liver b) Pancreas c) Gallbladder d) Esophagus
    d) Esophagus
  • What is not a function of gastric hydrochloric acid (HCl)?
    c) Neutralizing stomach acid
  • Why does the large intestine not contain villi and microvilli?
    The large intestine does not contain villi and microvilli because its primary function is water absorption, not nutrient absorption.
  • What is the function of folds and villi?
    Folds and villi increase the surface area for nutrient absorption in the small intestine.
  • Which accessory organ of the digestive system does not produce any enzymes or digestive secretions?
    The gallbladder does not produce any enzymes or digestive secretions; it stores bile.
  • Where are most fat-digesting enzymes produced?
    Most fat-digesting enzymes are produced in the pancreas.
  • Which layer of the alimentary canal wall secretes mucus and enzymes?
    The mucosa layer secretes mucus and enzymes.
  • What is a common feature of the digestive tube in most animal phyla?
    A complete digestive tube with a separate mouth and anus is a feature of most animal phyla.
  • What is the innermost layer of the digestive tract?
    The mucosa is the innermost layer of the digestive tract.
  • Where does protein digestion begin?
    Protein digestion begins in the stomach.
  • Which organ produces enzymes to digest energy-providing nutrients?
    The pancreas produces enzymes to digest energy-providing nutrients.
  • What is the function of the villi?
    The villi increase the surface area for absorption of nutrients in the small intestine.
  • In terms of food capture, what is the role of the digestive system?
    The digestive system captures food, breaks it down into nutrients, and absorbs them into the body.
  • What are three ways you can prevent foodborne illnesses?
    Three ways to prevent foodborne illnesses are: 1) Wash hands and surfaces often, 2) Separate raw meat from other foods, 3) Cook foods to the right temperature.