Question

In: Anatomy and Physiology

In the absorptive state ____________. 1-All of these 2-the liver is decreasing its supply of stored...

In the absorptive state ____________.

1-All of these

2-the liver is decreasing its supply of stored glycogen

3-blood glucose concentrations are expected to be lower than the acceptable homeostatic range

4-the GI tract is active

Solutions

Expert Solution

Answer:

Option 1 (All of these)

Explanation: Absorption is the stage which becomes operative post the process of digestion gets completed within the human alimentary canal.

The process begins with the process of transportation of the simplest forms of the food via the blood across the distant body parts. Also since the process of digestion gets completed within the duodenum of the small intestine, the maximum absorption also takes place there only. It is for this reason that the entire lumen of the small intestine (preferably duodenum) remains characterized by the presence of finger like projections called villi or microvilli in order to increase their surface absorptive areas. And also the different blood vessels meant for the transportation of the digested food begins from here only.

During this stage, the complete gastrointestinal tract is active and remains involved with the absorption of the different products of digestion.

Furthermore, during this process, the liver gets involved with the increased formation of glycogen so as to store the future energy depots as the main source of energy is the glucose. Therefore the process of glycogen formation gets stimulated as against it getting decreased.

Furthermore, in order for this process to happen, the blood concentration of glucose gets decreased as majority of the blood glucose gets involved in the formation of glycogen.

Therefore, all the above listed points are true and valid with respect to absorption.


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