A) \[\text{ }\!\!\beta\!\!\text{ -}\]cells of islets of Langerhans--insulin
B) \[\text{ }\!\!\alpha\!\!\text{ -}\]celis of islets ofLangerhans--insulin
C) Leydig cells -- testosterone
D) Corpus luteum -- progesterone
Correct Answer: B
Solution :
In pancreas, the a-cells of islets of Langerhans constitute about 25% of total cells and secrete glucagon, (3-cells are more than 60% of all the cells and secrete insulin, while 5-cells are about 10% of total cells and secrete somatostatin. Leydig cells of testes secrete testosterone, while corpus-luteum leads to the secretion of progesterone hormone.
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