Question

Pancreas is
A) Ectodermal
B) Mesodermal
C) Endodermal
D) None of the above

Answer 1

The pancreas is an organ of the vertebrates' digestive system and endocrine system. In humans, it is positioned behind the stomach in the abdomen and acts as a gland.

Complete answer:
The pancreas has a digestive function that is both endocrine and exocrine. As an endocrine gland, it primarily controls the levels of blood sugar and secretes insulin, glucagon, somatostatin, and pancreatic polypeptide hormones.It acts as an exocrine gland as part of the digestive system, secreting pancreatic juice through the pancreatic duct into the duodenum.This juice contains bicarbonate, which neutralises acid from the stomach that enters the duodenum; and digestive enzymes, which break down carbohydrates, proteins, and fats from the stomach that enter the duodenum in food. Two buds that emerge from the duodenal part of the foregut, an embryonic tube that is a precursor to the gastrointestinal tract, form the pancreas during development. It belongs to an endodermal origin. Pancreatic development starts with the formation of a pancreatic bud that is dorsal and ventral. Via a duct, each unites with the foregut. The dorsal pancreatic bud of the developed pancreas forms the spine, body, and tail, and the head and uncinate process form the ventral pancreatic bud. The pancreas is involved in the control and metabolism of blood sugar within the body and also in the secretion of substances that aid digestion (collectively, pancreatic juice). These are divided into a "endocrine" role relating to the secretion inside pancreatic islets of insulin and other substances that help regulate the levels of blood sugar and metabolism within the body, and a "exocrine" role relating to the secretion of enzymes involved in the digestive tract's digestive substances.

The correct Answer is Option(C) Endodermal.

Note: Pyramid of numbers is the relationship between the numbers of producers, herbivores and carnivores at successive trophic levels. In grassland, the producers, which are mainly grasses are always maximum in number as compared to the primary consumers (herbivores) like rabbits, mice etc.