GENERAL HISTOLOGY

Detailed explanation-1: -Insulin is secreted primarily in response to glucose, while other nutrients such as free fatty acids and amino acids can augment glucose-induced insulin secretion. In addition, various hormones, such as melatonin, estrogen, leptin, growth hormone, and glucagon like peptide-1 also regulate insulin secretion.

Detailed explanation-2: -Answer and Explanation: The correct answer: The statement that is true about the pancreas is B. Both glucagon and insulin are produced in the islets of Langerhans.

Detailed explanation-3: -Milk production (i.e., lactation), which occurs in the mammary glands, is regulated by several hormones, most prominently prolactin and oxytocin.

Detailed explanation-4: -When blood glucose levels rise, beta cells of the pancreas release insulin into the blood. This causes the body cells to take up more glucose from the blood stream and the liver cells to store glucose as glycogen. As a result, blood glucose levels decline.