Answer: option C - activating second messengers and stimulating glycogenolysis and gluconeogenesis.
Explanation:
Glucagon is an hormone, produced by the pancreas, that opposes the action of insulin by stimulating the production of SUGAR.
Glucagon is usually released whenever blood glucose levels is detected to be LOW. it works by activating secondary messengers.
Answer:
Linings of hollow organs
Explanation:
Smooth muscle cells are usually found in the lining of hollow organs such as all arteries and veins, wall of stomach, uterus, urinary bladder, digestive system etc. The cells of these linings are spindle shaped and consist of a nucleus at the center which lacks striations.
They work as a housekeeper and are under involuntary control except the heart. They lack striation because of irregular arraying of actin and myosin filament along the length of the cell.
Answer: B. the pH in the stomach is not suitable for the amylase to work.
Explanation: When carbohydrates reach the stomach no further chemical breakdown occurs because the amylase enzyme does not function in the acidic conditions of the stomach.
