Clue 1: Orient yourself
What happens if the door stays open?
Use the labels and the picture's left-to-right, near-to-far, or before-and-after order. Name only what you can point to.
The question
Why can a repaired palate still let air escape through the nose during speech?
Why it matters: Cleft care connects diagnosis, feeding, speech, hearing, and family support. A weak classification can send a team toward the wrong problem or make an important need easy to miss. Today you practice the professional reasoning behind that work: Clear pressure sounds need the soft palate to move upward and seal the mouth from the nose.
On your WebXam
Predicting which speech sounds suffer most when the palate cannot seal off the nose
For life
Having a gene is not the same as using it.
Principle: Having it is not using it
Five principles we return to
Having it is not using it
Same instructions, different switches
Same look, different cause
Change one thing and watch
Boss or doorman?
Decides the result or only allows it
Held down, not gone
Remove the brake and it returns
Many roads, one ending
One result can begin many ways
Try the everyday version first
A pressure door must close before the pump works
A pump can build pressure only inside a space that closes well. If a door or valve leaks, air escapes even when the pump itself works.
Do not jump to the biology yet. Treat the picture as a small system. Track its parts, follow one change at a time, and keep more than one explanation open until the picture supplies a way to separate them.
Clue 2: Trace one change
Which sounds would need pressure most?
Follow one object, stage, or path. Point to the first place where the situation changes instead of jumping to the ending.
Clue 3: Keep the cause open
Is the problem the pump, the door, or both?
List more than one explanation that still fits. Name the extra observation that would help you separate those possibilities.
Now inspect the illustration
Work from the visible evidence. A useful answer names the part of the picture that supports it and leaves unknown causes open.
- 1What happens if the door stays open?
- 2Which sounds would need pressure most?
- 3Is the problem the pump, the door, or both?
Tier 1 check
Finish with the everyday model
Use the everyday picture to answer today's question in plain words: Why can a repaired palate still let air escape through the nose during speech?
You can complete today's required check without opening the technical details below.
Ready for the real names? Optional tier 2
Technical rules and limits
Rule 1: Pressure builds only after a passage is sealed.
Rule 2: A moving valve must close at the right time.
Rule 3: Leaks create a predictable pattern of weak pressure.
Where the analogy stops: Speech involves airflow, sound, movement, and learned articulation. The door models only velopharyngeal closure.
Carry the previous idea forward
Lip repair restores form, while palate repair separates spaces and supports speech; different jobs require staged operations.
Today's technical takeaway
Clear pressure sounds need the soft palate to move upward and seal the mouth from the nose.
Now map the same rules onto biology
Watch the soft palate act as a moving seal
Door lifts shut
Soft palate elevates toward the throat wall
Pump builds pressure
Lungs and oral cavity build pressure for consonants
Leak through opening
Nasal air escape and hypernasality with VPI
The moving seal explains why pressure consonants are especially sensitive to velopharyngeal insufficiency.
Mateo's case file: evidence supplied in this lesson
D12-E1
Mateo's voice sounds overly nasal during connected speech.
Why it matters: Resonance suggests air and sound are entering the nose at the wrong time.
D12-E2
The consonants p, b, t, d, k, and g sound weak and nasal air is visible on a mirror.
Why it matters: Pressure consonants are affected by a seal problem.
D12-E3
Vowels and low-pressure sounds are easier to produce.
Why it matters: The problem is patterned rather than random.
Make the clinical decision
You are Mateo's speech-language pathologist.
You must decide whether today's pattern needs ordinary articulation practice alone or a full velopharyngeal evaluation.
ARefer for velopharyngeal evaluation while continuing appropriate speech support
BPractice p sounds only and ignore nasal escape
CAssume hearing loss is the only cause
Choose the next step and use the pattern across the three evidence IDs.
Evidence required
D12-E1 + D12-E2 + D12-E3 Claim ceiling
You may identify a pattern consistent with VPI. You may not diagnose the exact structural cause without further evaluation.Go deeper Optional tier 3
Everything required for today is above. Open these only if you want the explainer, source trail, or download files.
The everyday model and Tier 1 check are the complete required path for this lesson.
Use these checks to keep your place. They are not turned in through the portal.
Check off as you finish
- Worked through the everyday picture and answered its three questions.
- Completed the Tier 1 check in plain words.
Turn in: Disease lesson 12: How a Repaired Palate Lets Mateo Talk
Go to Schoology to turn this in.
Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf.
Open Schoology PDF upload helpIf you cannot get in, see Mr. Mendoza. Do not skip the work.
Optional legacy technical materials Open only if you want the original notes, vocabulary, artifact, and CER work
Before this page, you should know
- lip repair () is done at about 3 months (within the first 12 months) mainly to restore the form of the lip and nose.
- repair () is done at about 9 to 12 months (within the first 18 months) mainly to separate the oral and nasal cavities and enable normal speech.
If not, review
Today's new idea is only
A poorly sealing causes a specific kind of speech problem ( and weak ), not a random one.
Goal: Students will explain how the soft seals off the nose for speech, why a causes and nasal air escape (), and what the does about it.
Know by the end
- Clear speech needs : the lifts and the throat walls move in, closing the door between the mouth and the nose at the right moments.
- The is the muscle that lifts the soft to make this seal; in a palate it is interrupted and out of position.
- is when that seal does not work, producing and weak (p, b, t, d, k, g), the sounds that need built-up mouth air.
- The listens for , runs speech therapy, and, if the still cannot seal after good therapy, the team may consider a secondary speech surgery later in childhood.
1
The seal that speech needs
Model start: Clear speech needs the back of the mouth to seal off the nose at the right moments, a job done by the soft .
- Clear speech needs ______ closure: the soft lifts and the throat walls move in to seal the mouth off from the nose.
- The muscle that lifts the soft to make this seal is the ______ veli palatini, which is interrupted in a palate.
2
What happens when the seal fails
- When the seal does not work, we call it , or ______ for short.
- With VPI the voice sounds like too much of it comes through the ______ (), and the p, b, t, d, k, g suffer most.
3
What the SLP does
- The listens for , measures speech development, and runs speech ______.
- If the still cannot seal after good therapy, the team may consider a secondary speech surgery later in childhood.
Everything you need for today is on this page. These links are optional.
What to read
Read the short plain-language explanation written for this lesson. Plain-language explainer for this lesson
Why this source matters
This explanation gives you the background for today's idea without making you decode a research paper: A poorly sealing causes a specific kind of speech problem ( and weak ), not a random one.
Words to unlock first
velopharyngeal closurevelopharyngeal insufficiency (VPI)hypernasalitypressure consonantsspeech-language pathologist
Reading moves
- 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.
Stop point
Stop after the final 'Use it now' section. The research citations are available separately for advanced readers.
Your output
Write one claim-evidence sentence: state the main idea, then name the example or evidence that supports it.
Where this fits
Tested on (Ohio WebXam)
Genetics of Disease · 072130
PLTW lesson
MI · Disease domain · Medical Interventions (MI), speech outcomes and therapy
WebXam domain
Molecular and Genetic Technology
Evidence to produce
As Mateo's SLP at his 2-year visit, answer the parents' question 'Why does he sound like he is talking through his nose, and what will you do?' in three short sentences: (1) what the soft palate is supposed to do during speech, (2) what VPI means in plain words, and (3) one thing you will do about it. Use the words 'seal,' 'nose,' and 'pressure consonants.'
Lab / skill
Clinical backbone (cleft team) · Clinical backbone (cleft team)
Everything required for today's decision is already in the case file and plain-language explainer. The links below are original papers and database records for teachers and advanced readers, not assigned student reading.
- American Cleft Palate Craniofacial Association. 2024 Parameters of Care.
- Vyas T, et al. 2020. Cleft of lip and palate: A review. J Family Med Prim Care. [PMID:32984097]
- Dean KM, Leeper LK. 2020. Management of submucous cleft palate. Curr Opin Otolaryngol Head Neck Surg. [PMID:33105231]
- Camargo Y, et al. 2023. Pharyngeal flap versus sphincter pharyngoplasty for VPI in 22q11.2 deletion syndrome. J Craniofac Surg. [PMID:37431935]
- Claim: A poorly sealing causes a ____ (specific / random) kind of speech problem.
- Evidence: The speech feature most affected is ____ and the sound group most affected is the ____ consonants (p, b, t, d, k, g).
- Reasoning: Those sounds, and not a sound like 'ahh,' suffer because ____.
How this is graded (rubric)
For: As Mateo's SLP at his 2-year visit, answer the parents' question 'Why does he sound like he is talking through his nose, and what will you do?' in three short sentences: (1) what the soft palate is supposed to do during speech, (2) what VPI means in plain words, and (3) one thing you will do about it. Use the words 'seal,' 'nose,' and 'pressure consonants.'
| Criterion | Proficient | Developing | Beginning |
|---|---|---|---|
| Complete | Every required part of the artifact is present and filled in. | Most parts are present, but one is missing or left blank. | Several parts are missing. |
| Accurate | The science and data are correct and match the evidence. | Mostly correct, with a small factual slip. | Key science or data is wrong. |
| Scientific reasoning (CER) | States a claim, backs it with specific evidence, and explains the reasoning. | Has a claim and evidence, but the reasoning is thin or missing. | Gives an answer with no evidence or reasoning. |
| Professional communication | Clear, organized, and labeled the way a clinician or scientist would write it. | Readable but disorganized or missing labels. | Hard to follow. |
| Submitted | Turned in through the route named under Submit here and confirmed. | Turned in, but in the wrong place or unconfirmed. | Not turned in. |
How the model answer scores against this rubric
- CompleteProficient: Nothing is left blank: the model fills every part of "As Mateo's SLP at his 2-year visit, answer the parents' question 'Why does he sound like he is talking through his nose, and what will you do?' in three short sentences: (1) what the soft palate is supposed to do during speech, (2) what VPI means in plain words, and (3) one thing you will do about it. Use the words 'seal,' 'nose,' and 'pressure consonants.'".
- AccurateProficient: Every number and claim matches the case evidence.
- Scientific reasoning (CER)Proficient: It names a claim, cites the specific evidence, and explains the reasoning, not just the answer.
- Professional communicationProficient: It is organized and labeled like a real chart note.
- SubmittedProficient: It would be attached to your class form or handed in, and confirmed.
What's next: We answered how the lets Mateo make clear speech and what VPI is. But the same little muscles near the palate do another job: they help drain the . Mateo keeps getting ear infections and does not always turn to soft sounds. How do we protect his hearing?