PP cell
Encyclopedia
F cells are pancreatic polypeptide
producing cells
in the islets of Langerhans
in the pancreas
. They are very few in number and are polygonal in shape.
Using an electron microscope, PP-cells have been found to be up to 140 nm in diameter, have very few organelles and few granules.
Pancreatic polypeptide
Pancreatic polypeptide is a polypeptide secreted by PP cells in the endocrine pancreas predominantly in the head of the pancreas. It consists of 36 amino acids and has molecular weight about 4200 Da....
producing cells
Cell (biology)
The cell is the basic structural and functional unit of all known living organisms. It is the smallest unit of life that is classified as a living thing, and is often called the building block of life. The Alberts text discusses how the "cellular building blocks" move to shape developing embryos....
in the islets of Langerhans
Islets of Langerhans
The islets of Langerhans are the regions of the pancreas that contain its endocrine cells. Discovered in 1869 by German pathological anatomist Paul Langerhans at the age of 22, the islets of Langerhans constitute approximately 1 to 2% of the mass of the pancreas...
in the pancreas
Pancreas
The pancreas is a gland organ in the digestive and endocrine system of vertebrates. It is both an endocrine gland producing several important hormones, including insulin, glucagon, and somatostatin, as well as a digestive organ, secreting pancreatic juice containing digestive enzymes that assist...
. They are very few in number and are polygonal in shape.
Using an electron microscope, PP-cells have been found to be up to 140 nm in diameter, have very few organelles and few granules.