Gastrointestinal System

    Gastrointestinal System
    Which hormone is responsible for contraction of the gall bladder?
    One of the functions of CCK is to cause the gall bladder to contract.
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    Gastrointestinal System
    Which fluid within the body is likely to have the LOWEST pH?
    The stomach contents are the most acidic, that is, has the lowest pH.
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    Gastrointestinal System
    The process of hydrolysis may be represented by which of the following?
    Hydrolysis refers to using a water molecule to split a larger molecule in smaller ones. Here a disaccharide is being split into two monosaccharide molecules.
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    Gastrointestinal System
    The majority of dietary lipids are ingested in the form of:
    Triglycerides (or triacylglycerols) are the major component of human dietary lipids.
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    Gastrointestinal System
    The lowest pH is found in which of the listed body sites?
    The stomach has the lowest pH (is the most acidic), pH <2.
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    Gastrointestinal System
    Which hormone stimulates the release of bile and pancreatic juice?
    Duodenum produces and releases CCK when protein and fats enter the duodenum.
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    Gastrointestinal System
    What feature do procarboxypeptidase, pepsinogen, trypsinogen, chymotrypsinogen have in common?
    They are inactive so are not yet enzymes; when activated they would digest proteins, but not in their present form.
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    Gastrointestinal System
    To what does the term “gluconeogenesis” refer?
    “-Neogenesis” refers to making glucose from something new (that is not a carbohydrate).
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    Gastrointestinal System
    Forward movement of food material through the gastrointestinal tract is achieved by which process?
    Peristalsis is the name given to the smooth muscle movements that propel the gut contents.
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    Gastrointestinal System
    Which of the following is NOT a part of the gastrointestinal tract?
    Pancreas is an accessory gland outside of the GI tract but delivers its secretion via a duct.
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