UNC BIOL 252 Exam IV Digestive
System Study Guide
selective intake of food - Ans:-ingestion
mechanical and chemical breakdow of food into a form usable by the body - Ans:-digestion
the uptake of nutrient molecules into the epithelial cells of the digestive tract and then into the blood or
lymp...
inner lining of the digestive tract - Ans:✔✔-mucosa
contains glands that secrete lubricating fluid into the lumen - Ans:✔✔-submucosa
consists of usually two layers of muscle near the outer surface - Ans:✔✔-muscularis externa
nervous network of the eosphagus, stomach, and intestines - Ans:✔✔-enteric nervous system
where the crown, gum, and root meet - Ans:✔✔-neck
portion of the tooth below the gum, embedded in alveolar bone - Ans:✔✔-root
portion of the tooth above the gum - Ans:✔✔-crown
hard noncellular secretion that covers the crown and neck of a tooth - Ans:✔✔-enamel
enzyme that begins starch digestion in the mouth - Ans:✔✔-salivary amylase
the group of salivary glands located outside of the oral mucosa are categorized as - Ans:✔✔-extrinsic
glands
speech articulation, push food between teeth, and sucking action are functions of the ___ and _____ -
Ans:✔✔-lips;cheeks
moistens the mouth, clean the teeth, inhibit bacterial growth, and aid in swallowing by moistening food
so that the particles bind together - Ans:✔✔-saliva
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