The Normal Lip and Palate, Part by Part
Take the reading one piece at a time. For each piece: read it once, underline the sentence that says what happens, then look up any word in the list. Tap a word to see its definition.
Piece 1 of 3
Picture a healthy newborn's upper lip and open mouth, part by part. The upper lip has a soft vertical dip in the center called the philtrum, bordered by two raised ridges (the philtral columns) that meet a small double curve of the lip edge (Cupid's bow). The sharp line where the colored part of the lip meets the skin is the vermilion border.
Piece 2 of 3
Now look up into the open mouth. The front, bony, tooth-bearing ridge is the alveolus (the gum ridge that will hold teeth). Behind it, the firm front two-thirds of the roof is the hard palate (bone). The soft, movable back third is the soft palate, also called the velum, ending in the dangling uvula. A small landmark hole in the bone just behind the front teeth, the incisive foramen, marks the boundary between the front part of the palate and the back part.
Piece 3 of 3
The roof of the mouth (hard palate plus soft palate together) forms a complete wall. Above that wall is the nasal cavity. Below it is the mouth.
Reading the Research
- Skim the title and abstract first to get the gist.
- Circle the one sentence that states the main claim.
- Box the evidence the authors give for that claim.
- Mark one sentence that confuses you, and move on.
Now put it together: In one or two sentences, say what this whole reading is telling you about Mateo. Then go back to the lesson and fill in the guided notes.