Hormonal Control：練習問題

• a.

  Glucagon

• b.

  Glycogen

• c.

  Anti-diuretic hormone

• d.

  Insulin

• a.

  Increased insulin secretion stimulates the conversion of excess glucose to glycogen in the liver.

• b.

  Increased glucagon secretion stimulates the conversion of glycogen to glucose in the liver.

• c.

  Decreased insulin secretion allows liver cells to absorb and store more glucose.

• d.

  Increased glucagon secretion promotes increased uptake and permeability of glucose by muscle cells.

• a.

  Insulin is broken down rapidly, causing the liver to release stored glucose into the blood.

• b.

  Glucagon secretion increases to prevent blood glucose from falling below the baseline level.

• c.

  Glucagon promotes glycogenolysis and the release of glucose into the hepatic vein.

• d.

  Insulin promotes increased uptake of glucose into cells and glycogenesis in the liver.

• a.

  Pancreas

• b.

  Adrenal gland

• c.

  Gall bladder

• d.

  Liver

• a.

  Nervous impulses travel via the bloodstream, whereas hormones travel directly through neurones.

• b.

  Hormones travel via the bloodstream and usually produce slower, longer-lasting effects than nerve impulses.

• c.

  Hormones are transmitted along electrical pathways and only affect localized adjacent cells.

• d.

  Hormones act much faster and have shorter-lived responses compared to nerve impulses.

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