By definition, organelles are the membrane-bound structures in a cell. The nucleus is an example. Other organelles are located in the cytoplasm such as mitochondria, chloroplasts, endoplasmic reticulum, Golgi apparatus, peroxisomes, lysosomes, vacuoles and glyoxisomes.An eukaryotic cell contains many mitochondria, occupying up to a quarter of the cytoplasmic volume.he nucleus is an example. Other organelles are located in the cytoplasm such as mitochondria, chloroplasts, endoplasmic reticulum, Golgi apparatus, peroxisomes, lysosomes, vacuoles and glyoxisomes.
Enlarged bile duct symptoms vary depending upon the cause of enlargement or dilation: Gallstones in bile duct leading to its enlargement: 1  Usually there is a long history of flatulent dyspepsia (eructation).
The possible causes of a blocked bile duct include: 1  Cysts of the common bile duct. 2  Enlarged lymph nodes in the porta hepatis. 3  Gallstones. Inflammation of the bile ducts.  Narrowing of the bile ducts from 1  scarring. Injury from gallbladder surgery.  Tumors of the bile ducts or 1  pancreas. Tumors that have spread to the biliary  system.