VOICEOVER: Enzymes of the digestive system ... This video from the Biology with Dr. Chris van Tulleken series explains key scientific concepts and processes related to energy, food chains and ...

VOICEOVER: Enzymes of the digestive system ... This video from the Biology with Dr. Chris van Tulleken series explains key scientific concepts and processes related to energy, food chains and ...

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 ...