Tuesday, December 26, 2006

endoplasmic reticulum

image gjh.md
1. smooth endoplasmic reticulum (smooth ER)
2. cisternal space -- lumen -- of rough endoplasmic reticulum (rough ER) with proteins produced on exterior
3. cisternae of rough ER
4. chains of ribosomes along mRNA on membrane of rough ER, the proteins move into the lumen of the cisterna following assembly
5. rosette-shaped nuclear pore (size exaggerated)
6. nuclear membrane continuous with membrane of ER
7. strands of heterochromatin adherent to nucleolus
8. nucleolus, site of production of ribosome components
9. nuclear material in nucleus (cut-away)


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