The acid in the human stomach that aids in digestion is?

Its either gastric acid or hydrochloric acid.

The answer is hydrochloric acid

This is one of the strongest acids in the world, theres a layer of glue-like substance in our stomaches keeping it from melting through us.

The  grandmother cell  is a hypothetical  neuronthat represents a complex but specific concept or object.[1]  it activates when a person "sees, hears, or otherwise sensibly discriminates"[2]  a specific entity, such as his or her grandmother. the term was in use at least as early as 1966 amongst staff and students in the department of experimental psychology, university of cambridge, england. a similar concept, that of the  gnostic neuron, was proposed two years later