Moistening saliva fed into the mouth from nearby glands starts the process of chemical digestion using specialized proteins called enzymes. Secreted at various points along the digestive tract ...

Anyone who suffers from a hereditary, genetically-determined digestive enzyme limitation like lactose or fructose intolerance ...

Medically reviewed by Brendan Camp, MD The integumentary system is the body’s outermost layer. Composed of skin, hair, nails, ...

However, not all stomach glands contain every type of cell ... and secondary protein structures to make it easier for the ...