Lab 6 Flashcards
Lumen
Lumen is cavity inside GI tract where the food/liquid would be.
Difference between mucosa and epithelium
Mucosa is inner layer with innermost layer of cells called epithelium (be sure you know difference)
Submucosa
Submucosa is layer where blood vessels often are
What are the 2 layers that compose the muscularis
Circular muscle form a ring around GI tract.
Longitudinal muscle run down length of GI tract.
Serosa
Serosa is outer layer of GI tract.
What are the 2 areas within the mouth?
Outside teeth – labial vestibule.
Inside teeth – oral cavity.
Hard palate
Anterior roof of mouth; palatine bone under tissue. (2/3)
Soft palate
Posterior roof of mouth; just tissue, no bone.
Hanging off back of soft palate is uvula. (1/3)
Papillae
Bumps on tongue in a range of sizes
Some papillae have taste buds, some are for texture/friction when moving food around.
Vallate papillae
Largest size and arranged in upside down “v” on back of tongue
Fungiform papillae
Medium size, spread irregularly over surface
Filiform papillae
Smallest size, spread irregularly over surface
What are the 2 dentitions in an individual’s life?
There are two dentitions, or sets of teeth, in an individual’s lifetime:
Deciduous (or primary) teeth.
Permanent (or secondary) teeth.
What are incisors used for?
Incisors used to cut food
What are canines used for?
Canines used to tear or shred food.
What are premolars and molars used for?
Premolars used for crushing and grinding food.
Where is the parotid gland located?
Over by ear.
Glands are paired (left / right).
Ducts form passageways from glands into oral cavity.