bio test #5 - digestive system unit 9
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105 Terms
how is the digestive system involved in helping maintain homeostasis
it is involved in the ingestion and digestion of food and elimination of indigestible material
where does digestion take place
within the digestive tract, begins with mouth and ends with the anus
what two types of digestion is involved in digestion
mechanical and chemical
what occurs during mechanical digestion
involves the chewing of food and churning and mixing of food in the stomach
what occurs during chemical digestion
enzymes break down macromolecules to small organic molecules that can be absorbed
how is the mouth bounded externally?
by lips and cheeks
what is the cause of the red portion of our lips
our lips are poorly keratinized which allows blood to show through
