Digestion and Absorption Feeling of Satiety

Question :

What kind of innervation do you think is involved in your sensation?

What other factors are contributing to your feeling of satiety?

Answer :

What kind of innervations do you think is involved in your sensation of "full"?

the presence of the nerve receptors internally senses the food volume and the stomach wall pressure. Such receptors keep sending signals to that person’s brain through the vagus nerve resulting in the fullness sensation. 

Though minor variations are present regarding the exact pattern, most signals of satiety interact with the specific receptors. Such receptors are found in the peripheral nerves which pass from the GI tract till the brain (hindbrain) (Caron et al., 2016). Such involves the vagus nerves mostly or else it keeps circulating to the hindbrain through the blood. These signals then keep interacting with the receptors present locally like amylin for instance.       

What other factors are contributing to your feeling of satiety?

With the food type added, the palatability, satiety ratings, mood, serving size, income, education level, customs and social settings are few factors. These mentioned factors tend to affect body weight and food intake (Liu & Kanoski, 2018). There are also meal factors like energy density, macronutrient composition, energy content, weight and volume. Such factors might result in different signals of satiety.  

Researchers and scientists are still placing efforts in revealing further factors influencing one's satiety. Also, heritability factors are observed significantly for both the slope and correlation regarding the regression between meal size and satiety before meals. Even genes appeared in affecting the influences involving intake upon satiety.

  References

Caron, J., Cudennec, B., Domenger, D., Belguesmia, Y., Flahaut, C., Kouach, M., ... & Ravallec, R. (2016). Simulated GI digestion of dietary protein: Release of new bioactive peptides involved in gut hormone secretion. Food Research International, 89, 382-390. 

Liu, C. M., & Kanoski, S. E. (2018). Homeostatic and non-homeostatic controls of feeding behavior: Distinct vs. common neural systems. Physiology & behavior, 193, 223-231.