Digestive System by ert554898

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									Digestive System
Development
   of the
 Digestive
  System
What are the chief
derivatives of the
primitive gut?
Name the embryonic
germ layer that
lines these
structures.
   Overview of
Digestive Anatomy




 Describe the basic functions performed by the organs of the digestive system.
 Relate these functions to the tissue construction of each organ.
     The Peritoneum and its folds



Double folds of the ______
form the mesentery.
What happens to the
diaphragm when abdominal
muscles compress digestive
organs? When would this
happen?
4-layer Basic Plan in the Wall of the
         Alimentary Canal
                             How does the
                             mucosa differ
                             between the
                             esophagus and the
                             small intestine?
                             Explain why.


                             What is another
                             name for serosa in
                             the abdominal
                             cavity?
Describe the                              What role does
arrangement of smooth       Peristalsis   the Enteric NS
muscle in the muscularis                  have in digestive
layer.                                    function?
Name a second type of
movement characteristic
of the alimentary canal.
Name the two divisions of
the nervous system
important in extrinsic
regulation of digestive
activities.
Controlling
 Digestive
Functions
 What portion(s) of this
 figure represent the
 Enteric Nervous System
 (ENS)?
 Describe at least 2
 examples of how
 “external influences”
 might affect digestive
 function
   Anatomy of the Small Intestine




Which 3 features
increase absorptive
surface area in the
intestine?
Regions of the Small Intestine
           Which layer in the wall of the intestine is
           used to distinguish between these regions?
Gross Anatomy of the
      Pancreas
     Microscopic Anatomy of the
             Pancreas
                      What is the meaning of “acinus”?




Name the hormones
released from islet
cells.
               Liver, Gall Bladder and
                  Associated Ducts


Name the organ that
manufactures bile.
Name the only
component of bile that
has a digestive function.



What is the fate of cholesterol,
secreted in bile?
   Scheme for the Hepatic Portal
             System
Blood enters hepatic sinusoids
from 2 sources. Name these
and explain the reason for this
circulatory pattern.




                                  Name the artery
                                  from which the
                                  hepatic artery
                                  branches.
The Hepatic
Lobule: Functional
Unit of the Liver


                     What 3 tubular
                     organs make up
                     each “triad”.
                     What is the
                     direction of blood
                     flow within a
                     lobule? … bile
                     flow?
Functions of the Liver

								
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