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Rough endoplasmic reticulum
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![RER cisterns <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-8-1-ping.png)
RER cisterns
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![- Cistern lumen <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-8-2-ping.png)
- Cistern lumen
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![Ribosomes <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-8-3-ping.png)
Ribosomes
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![Cytoplasm <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2022/05/C.S.ER-8-cyto-ping.png)
Cytoplasm
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![Nucleus <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2022/05/C.S.ER-8-nuc-ping.png)
Nucleus
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![Outer nuclear membrane <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-8-4-ping.png)
Outer nuclear membrane
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![Inner nuclear membrane <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-8-5-ping.png)
Inner nuclear membrane
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![Perinuclear space <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-8-6-ping.png)
Perinuclear space
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![Lipid droplet <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-8-7-ping.png)
Lipid droplet
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x
![Mitochondria <p>In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x</p>](https://digitalhistology.org/wp-content/uploads/2017/05/C.S.ER-8-8-ping.png)
Mitochondria
In actively secreting cells, the RER is very extensive and consists of large numbers of interconnecting, flattened sacs or cisterns. Also visible in this field is the nuclear envelope showing ribosomes on the cytoplasmic surface of the outer nuclear membrane. Mitochondria and lipid droplets are also present. 40,000x