Page 118 - Fundamentals of anatomy physiology
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Watch the                         > ™ on Protein Synthesis.

6  The transport            7  Multiple transport         8  The maturing trans                9  Two other types of
   vesicles carry the          vesicles combine to           face ("shipping side")               vesicles proceed to the
proteins and glycopro-      form cisternae on the cis     generates vesicles that              plasma membrane: secretory
teins generated in the      face. Further protein and     carry modified proteins              and membrane renewal.
ER toward the Golgi         glycoprotein modification     away from the Golgi                  Secretory vesicles fuse
apparatus. The transport    and packaging occur as the    apparatus. One type of               with the plasma membrane
vesicles then fuse to       cisternae move toward the     vesicle becomes a                    and empty their products
create the forming cis      maturing (trans) face. Small  lysosome, which contains                outside the cell by
face ("receiving side") of  transport vesicles return     digestive enzymes.                      exocytosis. Membrane
the Golgi apparatus.        resident Golgi proteins to                                            renewal vesicles add new
                            the forming cis face for                                              lipids and proteins to the
                            reuse.                                                                plasma membrane.

                            Cisternae

                                                                     Lysosome

                                                             8

   6                                   7

            Forming                                                                 Secretory                Exocytosis at
           (cis) face                                                                vesicle                  cell surface

                                                             Maturing                             9
                                                             (trans) face

                                                                                 Membrane
                                                                                   renewal
                                                                                    vesicle

                                                                                                  Membrane
                                                                                                    renewal

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