Digestive System: ANAT 201 Exam
Questions With Correct Answers A+
Functions of the digestive system - Answer✔ingestion, digestion, absoption, compaction &
defecation
Ingestion - Answer✔taking in food
Digestion - Answer✔mechanical and chemical breaking food into nutrient molecules
Absorption - Answer✔movement of nutrients into the bloodstream
Compaction - Answer✔absorption of water & consolidation of indigestible residue
Defecation - Answer✔elimination of indigestible waste (elimination of feces)
Two main groups of organs - Answer✔Alimentary canal & Accessory digestive organs
Alimentary canal (gastrointestinal or GI tract) - Answer✔hollow tube from the mouth to the anus
Accessory digestive organs - Answer✔teeth, tongue, salivary glands, liver, gallbladder, and
pancreas
TRUE OR FALSE: The digestive tract has the same basic structural plan from the esophagus to
the anal canal with modifications for the specific regions. - Answer✔TRUE
Mucosa - Answer✔Epithelium, Lamina propria - loose connective tissue, Muscular mucosa
Submucosa - Answer✔Loose connective tissue with vessels and nerves
Muscular externa - Answer✔smooth muscle for propulsion and mixing. Inner circular layer and
outer longitudinal layer
Serosa - Answer✔Areolar tissue topped with simple squamous mesothelium
What part of the cavity does the alimentary canal run through - Answer✔Ventral cavity -- from
the stomach to the anus
Alimentary canal organs - Answer✔mouth, pharynx, esophagus, stomach, small intestine, large
intestine
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Mouth - Answer✔oral cavity that contains cheeks and lips
- Palate that separates the oral cavity from the nasal cavity and makes it possible to breathe and
chew food at the same time
Tongue - Answer✔Lingual papillae
- Vallate, foliate, & fungiform
Teeth - Answer✔Mastication of food
- Incisors: chisels
- Canines: puncture and shred
- Premolars and molars: crush and grind
How many deciduous teeth are there? (deciduous --> baby teeth) - Answer✔20
How many permanent teeth are there? - Answer✔32
When does deciduous teeth begin to emerge? - Answer✔6 to 30 months
When are deciduous teeth replaced with permanent teeth? - Answer✔6 to 25 years
When do wisdom teeth erupt? - Answer✔17-25 years
Gingiva - Answer✔gums
Enamel - Answer✔covers the crown
internal structure of the teeth - Answer✔dentin
Where are the nerves and vessels located? - Answer✔pulp cavity & root canal
The salivary glands contain what cells? - Answer✔Mucous & serous cells
Saliva contains - Answer✔water, amylase, lipase, mucus, lysozyme, immunoglobulin A,
electrolytes
Extrinsic salivary glands - Answer✔secrete relatively small amounts of saliva that keep the
mouth moist
Intrinsic salivary glands - Answer✔Produces the most saliva, located outsidee of the oral mucosa
and secrete a mixture of mucus and fluid rich in amylase and electrolytes
What two sections of the pharynx are shared by the digestive and respiratory tracts and pass both
food and air? - Answer✔Oropharynx & Laryngopharynx
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