Questions? Comments? Please contact Dr. Phillip McClean or Christina Johnson.

OVERVIEW
Flythrough Tour
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MOLECULAR PROCESSES
Transcription
Regulated Transcription
mRNA Processing
mRNA Splicing
Translation
Lac Operon
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CELLULAR PROCESSES
Protein Trafficking
Protein Modification
Protein Recycling
Insulin Signaling
Constitutive Secretion
Regulated Secretion
Mitochondrial Protein Transport
Mitosis
Meiosis
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CELLULAR ENERGY CONVERSION
Atp Synthase (Gradients)
Electron Transport Chain
Photosynthesis (Light Reaction)
Photosystem II
Glycolysis (Overview)
Glycolysis (Reactions)
Citric Acid Cycle (Overview)
Citric Acid Cycle (Reactions)
Energy Consumption
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HOME > REGULATED SECRETION > ADVANCED LOOK > 1.) VESICLES > 2.) EXOCYTOSIS
Regulated Secretion: Advanced Look --> 2.) Exocytosis

In regulated secretion, the exocytosis process is not completed until a specific signal enters the cell. Clicking on each of the thumbnail images will bring up a larger, labeled version of the described scene.

To see the Flash movie for the following sequence of images, click here.

When glucose molecules enter the cell, a sequence of events is put into action that results in the fusion of the secretory vesicles with the plasma membrane of the cell.

Exocytosis is completed as the fusion of the secretory vesicles into the cell membrane releases insulin into neighboring blood capillaries.

The released insulin goes on to stimulate the release of glucose receptors into the membranes of additional cells, also by the exocytosis process.

 

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