A: The corneal reflex is an involuntary closing of the eyelids when the cornea is touched by a foreign object. The function of this reflex is to protect the eye from damage. Absence of a corneal reflex may indicate damage to the fifth and seventh cranial nerves, which mediate the reflex.
Cellular respiration is the process by which the chemical energy of food molecules is released and partially captured in the form of ATP. Carbohydrates, fats, and proteins can all be used as fuels in cellular respiration, but glucose is most commonly used as an example to examine the reactions and pathways involved.
The chemical reactions in cellular respiration are similar to the chemical reactions when. organic compounds are burned, but of course no ATP is produced. Instead energy is. released in the form of light and heat. The following equation shows the chemical. changes that occur when the monosaccharide glucose is burned.