Clue 1: Orient yourself
What happens if the deck closes but the cables remain misdirected?
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 is closing the roof of the mouth not enough to make it work?
Why it matters: Structure affects feeding, breathing, hearing, speech, teeth, and surgical planning. Care teams need to connect the exact structure to the function a child is using every day. Today you practice the professional reasoning behind that work: Palate repair must close the oral-nasal opening and rebuild the levator sling while protecting blood supply and growth.
On your WebXam
Separating hole closure from muscle reconstruction in palate repair
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 drawbridge needs both a sealed deck and correctly placed lift cables
A drawbridge deck must close the crossing, and its cables must lift from useful positions. Shape and force placement solve different parts of the problem.
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 parts must move after repair?
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
Why must the repair protect its supply lines?
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 deck closes but the cables remain misdirected?
- 2Which parts must move after repair?
- 3Why must the repair protect its supply lines?
Tier 1 check
Finish with the everyday model
Use the everyday picture to answer today's question in plain words: Why is closing the roof of the mouth not enough to make it work?
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: Close the tissue layers without tension.
Rule 2: Reorient the levator into a transverse sling.
Rule 3: Protect blood supply, airway, and later growth.
Where the analogy stops: The soft palate is a living neuromuscular valve, not a bridge mechanism.
Carry the previous idea forward
Lip repair restores a continuous orbicularis ring and aligned lip landmarks, not merely a closed skin line.
Today's technical takeaway
Palate repair must close the oral-nasal opening and rebuild the levator sling while protecting blood supply and growth.
Now map the same rules onto biology
Compare closure-only with functional palatoplasty
Bridge deck
Oral and nasal lining closure
Lift cables
Levator veli palatini sling
Supply lines
Palatal blood supply
Educational illustration, not a clinical photograph, scan, or surgical plan. Use the labeled evidence cards and claim ceiling.
Mateo's case file: evidence supplied in this lesson
ANA09-E1
Mateo's cleft opens through hard and soft palate.
Why it matters: Both oral-nasal separation and soft-palate function need repair.
ANA09-E2
His levator fibers are abnormally oriented along the cleft margins.
Why it matters: Functional repair requires muscle reconstruction, not mucosal closure alone.
ANA09-E3
Palate surgery can risk bleeding, tissue injury, airway obstruction, fistula, and later growth effects.
Why it matters: A plan must include safety and surveillance, not only closure.
Make the clinical decision
You are the cleft surgeon presenting two palatoplasty plans.
One plan closes lining only. The other closes layers, rebuilds the levator sling, preserves vascular supply, and includes airway monitoring.
AChoose the functional layered plan.
BChoose lining closure only because no visible hole remains.
CDelay every palate repair until adulthood to avoid all growth effects.
Choose the plan and cite closure, muscle, and safety evidence.
Evidence required
ANA09-E1 + ANA09-E2 Claim ceiling
You may identify required goals and risks. You may not name one palatoplasty technique as best for every patient.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: Anatomical lesson 9: Rebuilding the Roof of the Mouth
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
- The defining lesion of a lip is the interrupted ring, whose fibers insert abnormally on the cleft margins instead of crossing the .
- Every technique shares the same goals: release the misdirected muscle, rebuild a continuous ring, level the Cupid's bow, and restore and nasal symmetry.
If not, review
Today's new idea is only
must close the oronasal hole AND rebuild the levator sling; a closed with a misdirected muscle is a hole filled but a valve that cannot work.
Goal: Explain that must do two jobs at once (close the and reconstruct the levator sling), and compare how named techniques achieve them.
Know by the end
- Job 1 is closing the in layers; Job 2 (the harder one) is rebuilding the into a working sling.
- In a the levator ran the wrong way and inserted onto the back of the ; imaging shows it stays abnormal even after repair, worst in children who still leak air.
- von Langenbeck closes the lining but does not reliably reposition the levator; is the muscle repair; the Furlow Z-plasty reorients the muscle and lengthens the soft .
- Adding the Furlow element to the Sommerlad method raised velopharyngeal competence from 57.9% to 70.5% in a 1254-patient series, with a 4.3% fistula rate.
1
Two jobs
Model start: must do two jobs: close the in layers, and rebuild the levator into a working sling.
- Job 2 reconstructs the into a ____, because in a the muscle ran the wrong way and inserted onto the back of the .
- A that is closed but whose muscle still points the wrong way is a hole filled but a valve that cannot ____.
2
What each technique does
- von Langenbeck closes the lining but does not reliably move the ____.
- The Furlow reorients the muscle transversely AND ____ the soft .
3
One number
- Adding the Furlow element to the Sommerlad method raised velopharyngeal competence from 57.9 percent to ____ percent, with a 4.3 percent fistula rate.
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: must close the oronasal hole AND rebuild the levator sling; a closed with a misdirected muscle is a hole filled but a valve that cannot work.
Words to unlock first
palatoplastylevator veli palatinimuscular slingintravelar veloplastydouble-opposing Z-plasty
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 · Anatomical domain · Structure and function; the velopharyngeal valve
WebXam domain
Molecular and Genetic Technology
Evidence to produce
Present Mateo's palate-repair plan in four sentences: (1) state the two jobs and which is harder, citing the muscle source, (2) name the technique or combination you will use and tie it to the muscle, (3) cite one real number that supports paying attention to the muscle, and (4) end with a clear plan. Show you know the difference between closing a hole and building a valve.
Lab / skill
Human Body Systems (HBS) · Biomedical Innovations (BI)
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.
- Lindeborg et al. 2020, Optimizing speech outcomes for cleft palate (Curr Opin Otolaryngol HNS)
- Brooker et al. 2021, Furlow Double-Opposing Z-Plasty for Submucous Cleft (Plast Reconstr Surg)
- Huang et al. 2023, Sommerlad-Furlow modified palatoplasty, 1254 patients (J Craniomaxillofac Surg)
- Claim: A successful repair is judged by the muscle, not just by whether the hole is closed.
- Evidence: Cite the levator finding and one technique-comparison number.
- Reasoning: Explain why two children with closed palates could still have very different speech.
How this is graded (rubric)
For: Present Mateo's palate-repair plan in four sentences: (1) state the two jobs and which is harder, citing the muscle source, (2) name the technique or combination you will use and tie it to the muscle, (3) cite one real number that supports paying attention to the muscle, and (4) end with a clear plan. Show you know the difference between closing a hole and building a valve.
| 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 "Present Mateo's palate-repair plan in four sentences: (1) state the two jobs and which is harder, citing the muscle source, (2) name the technique or combination you will use and tie it to the muscle, (3) cite one real number that supports paying attention to the muscle, and (4) end with a clear plan. Show you know the difference between closing a hole and building a valve.".
- 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 closed Mateo's and rebuilt the levator sling. But two children can have the very same closed palate, repaired the very same way, and one speaks clearly while the other does not. Part of that may be the calendar. When should the lip and palate each be repaired, and could timing itself help decide whether Mateo speaks clearly? We chase that next time.