Clue 1: Orient yourself
What happens when the drain stays closed?
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 change in the palate lead to fluid behind the eardrum?
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: Cleft-related middle-ear fluid can reduce hearing, so repeated hearing checks protect speech development.
On your WebXam
Tracing how a cleft palate causes recurrent middle-ear fluid and conductive hearing loss
For life
To find the cause, change one thing and watch what changes.
Principle: Same look, different cause
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 drain that does not open lets fluid collect
Some drains and vents must open at the right time to move fluid or balance pressure. If the opening stays closed, fluid can remain trapped behind it.
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
Why can the surface look fine while fluid collects behind it?
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
How would you test whether flow is blocked?
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 when the drain stays closed?
- 2Why can the surface look fine while fluid collects behind it?
- 3How would you test whether flow is blocked?
Tier 1 check
Finish with the everyday model
Use the everyday picture to answer today's question in plain words: Why can a change in the palate lead to fluid behind the eardrum?
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: Poor drainage allows fluid to remain.
Rule 2: A hidden fluid problem can affect function before causing pain.
Rule 3: Repeated measurement catches changes over time.
Where the analogy stops: The Eustachian tube actively opens and the middle ear is not a sink. The analogy models drainage only.
Carry the previous idea forward
Clear pressure sounds need the soft palate to move upward and seal the mouth from the nose.
Today's technical takeaway
Cleft-related middle-ear fluid can reduce hearing, so repeated hearing checks protect speech development.
Now map the same rules onto biology
Connect palate muscles to middle-ear drainage
Drain pathway
Eustachian tube connects middle ear to the throat
Drain does not open
Palate muscle differences reduce tube opening
Water remains
Middle-ear effusion causes conductive hearing loss
Hearing may change as fluid changes, which is why one passed newborn screen does not end surveillance.
Mateo's case file: evidence supplied in this lesson
D13-E1
Mateo passed the newborn hearing screen.
Why it matters: Hearing was adequate at that moment, not guaranteed for all later months.
D13-E2
At follow-up, both eardrums show reduced movement and middle-ear fluid.
Why it matters: Sound conduction may now be reduced.
D13-E3
Mateo sometimes does not turn toward soft speech sounds.
Why it matters: The functional observation supports prompt audiology testing.
Make the clinical decision
You are the audiologist reviewing a passed newborn screen and new ear findings.
The family asks whether the original pass means no further hearing checks are needed.
AComplete age-appropriate hearing testing and coordinate ear management
BWait until Mateo fails a school hearing screen
CAssume speech delay is unrelated to hearing
Choose the plan and explain why the newborn result does not cancel the new evidence.
Evidence required
D13-E1 + D13-E2 + D13-E3 Claim ceiling
You may say hearing is at risk and testing is needed. You may not state the degree of loss before audiology results.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 13: Protecting Mateo's Hearing
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
- 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.
If not, review
Today's new idea is only
Mateo's repeated ear infections are a mechanical drainage problem from the , not bad luck, and untreated they threaten the hearing his speech depends on.
Goal: Students will explain why leads to recurrent middle-ear fluid and conductive hearing loss (Eustachian tube dysfunction) and why the team monitors hearing and uses ear tubes.
Know by the end
- The drains and ventilates through one tube, the Eustachian tube, which is normally closed and opens briefly when you swallow or yawn.
- A muscle, the tensor veli palatini, pulls the Eustachian tube open; in a palate this muscle is interrupted, so the tube does not open and drain well.
- Fluid trapped behind the eardrum is , which is recurrent and high-risk in , and it muffles sound to cause conductive hearing loss (the inner ear is fine).
- The team places tympanostomy (ear) tubes to drain the and protect hearing, and the audiologist monitors hearing during the years the child is learning to talk.
1
The ear's drainpipe
Model start: A is also an ear problem, because a palate muscle helps run the ear's drainpipe.
- The drains and ventilates through the ______ tube, which is pulled open by a muscle.
- That muscle is the ______ veli palatini, which is disrupted when the is , so the tube does not open well.
2
Trapped fluid and hearing
- Fluid trapped behind the eardrum is called otitis media with ______, and it is recurrent and common in .
- The fluid muffles the eardrum and ear bones, causing ______ hearing loss; the inner ear itself is fine.
3
Protecting hearing
- The team often places small ______ tubes through the eardrum so the can drain and breathe.
- The audiologist checks hearing regularly, because unnoticed loss during the speech-learning years can slow language.
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: Mateo's repeated ear infections are a mechanical drainage problem from the , not bad luck, and untreated they threaten the hearing his speech depends on.
Words to unlock first
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), Unit 1 hearing loss and intervention
WebXam domain
Molecular and Genetic Technology
Evidence to produce
As Mateo's audiologist, explain to a parent in three short sentences: (1) why the cleft palate causes the ear infections (use 'Eustachian tube' and 'drain'), (2) how the trapped fluid can affect hearing, and (3) one thing the team does to protect his hearing. Add one sentence on why you want to test his hearing before he is far into learning to talk.
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.
- Claim: Mateo's repeated ear infections are connected to his , not ____ (bad luck / a structural cause).
- Evidence: The disrupts the ____ veli palatini, so the ____ tube does not open, fluid backs up, and the muffled sound causes ____ hearing loss.
- Reasoning: Catching this early matters during the years a child is learning to speak because ____.
How this is graded (rubric)
For: As Mateo's audiologist, explain to a parent in three short sentences: (1) why the cleft palate causes the ear infections (use 'Eustachian tube' and 'drain'), (2) how the trapped fluid can affect hearing, and (3) one thing the team does to protect his hearing. Add one sentence on why you want to test his hearing before he is far into learning to talk.
| 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 audiologist, explain to a parent in three short sentences: (1) why the cleft palate causes the ear infections (use 'Eustachian tube' and 'drain'), (2) how the trapped fluid can affect hearing, and (3) one thing the team does to protect his hearing. Add one sentence on why you want to test his hearing before he is far into learning to talk.".
- 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 why the threatens hearing and how the team protects it. But Mateo's first teeth are coming in, and his parents notice some are crooked and one looks unusually small. How do we care for his teeth and his bite over the years ahead?