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Question regarding gastrin?

  • 01-04-2015 7:00pm
    #1
    Casualcontrol1
    Registered Users, Registered Users 2 Posts: 226 ✭✭


    Can someone help with this qs...

    Which of the following statements about gastrin
    is true?
    A. It is a hormone that is secreted by cells in
    the epithelium of the duodenum.
    B. It is an enzyme that is secreted into the
    lumen of the stomach.
    C. It is a hormone that is secreted in response
    to sympathetic stimulation.
    D. It is an enzyme that breaks down proteins.
    E. It is a hormone that is secreted in response
    to the presence of peptides in the stomach.


Comments

  • #2
    beardedmaster
    Registered Users, Registered Users 2 Posts: 614 ✭✭✭beardedmaster


    We can't do your homework for you. Google might though!


  • #3
    Casualcontrol1
    Registered Users, Registered Users 2 Posts: 226 ✭✭Casualcontrol1


    Im not asking anyone to do homework I am just asking does anyone know the answer...


  • #4
    EoghanIRL
    Registered Users, Registered Users 2 Posts: 4,080 ✭✭✭EoghanIRL


    Casualcontrol1 wrote: »
    Can someone help with this qs...

    Which of the following statements about gastrin
    is true?
    A. It is a hormone that is secreted by cells in
    the epithelium of the duodenum.
    B. It is an enzyme that is secreted into the
    lumen of the stomach.
    C. It is a hormone that is secreted in response
    to sympathetic stimulation.
    D. It is an enzyme that breaks down proteins.
    E. It is a hormone that is secreted in response
    to the presence of peptides in the stomach.

    Gastrin is produced by g cells
    It is innervates by vagus nerve which is parasympathetic.
    It is a hormone.
    Pepsinogen breaks down proteins.
    Gastrin stimulates ecl cells and parietal cells whose products activate Pepsinogen which breaks down proteins.

    The answer should be obvious now.


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