Final answer:
Excess glucose ingested from a meal is primarily converted and stored as glycogen in the liver and muscle cells, under the regulation of insulin.
Step-by-step explanation:
About two-thirds of the glucose that is ingested with a meal is removed from the blood and stored as glycogen. During the absorptive state, when blood glucose levels are high, the beta cells of the pancreas release insulin. Insulin stimulates the liver and muscle cells to convert excess glucose into glycogen via the intermediary glucose-6-phosphate. This process helps in reducing blood glucose levels and stores the glucose in a form that can be readily mobilized for energy when needed. Any glucose not immediately needed for energy or storage as glycogen can also be converted into fat and stored in adipose tissues.