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).
Pathophysiology and Natural History. Stones in the bile duct can cause biliary obstruction and cholestasis. This can lead to infection in the bile duct (bacterial cholangitis), which requires urgent medical therapy. The long-standing presence of stones in the bile duct can lead to secondary biliary cirrhosis.