Clue 1: Orient yourself
Where does air enter when the side port is 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
Where does air enter when the side port is open?
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: A cleft palate limits suction because the mouth cannot seal from the nose, so feeding support changes flow rather than blaming effort.
On your WebXam
Linking an open palate to the failure of suction feeding
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 drinking straw cannot pull fluid through an open side port
Suction works only when the tube and mouth form a mostly closed path. An open side port lets air enter and weakens the upward pull on fluid.
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 does stronger sucking not fix the leak?
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
Which change could move fluid without requiring a sealed tube?
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.
- 1Where does air enter when the side port is open?
- 2Why does stronger sucking not fix the leak?
- 3Which change could move fluid without requiring a sealed tube?
Tier 1 check
Finish with the everyday model
Use the everyday picture to answer today's question in plain words: Where does air enter when the side port is open?
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: Check whether a pressure chamber can seal.
Rule 2: Match support to the failed mechanism.
Rule 3: Track intake, time, breathing, and growth rather than bottle brand alone.
Where the analogy stops: Infant feeding also depends on swallowing, airway coordination, endurance, and caregiver technique.
Carry the previous idea forward
Clefts vary along several independent axes, so one familiar example cannot stand for the whole spectrum.
Today's technical takeaway
A cleft palate limits suction because the mouth cannot seal from the nose, so feeding support changes flow rather than blaming effort.
Now map the same rules onto biology
Trace pressure and flow during Mateo's feeding
Open straw port
Oral-nasal opening
Lost pressure
Reduced suction
Assisted flow
Specialized squeezable feeding system
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
ANA06-E1
Mateo has a complete cleft palate connecting the oral and nasal spaces.
Why it matters: He cannot form a typical sealed suction chamber.
ANA06-E2
He coordinates swallowing and breathing but tires during long feeds.
Why it matters: The primary supplied problem is inefficient transfer, not absent effort.
ANA06-E3
The team can provide an assisted-flow bottle, upright positioning, pacing, and weight monitoring.
Why it matters: Support works around the pressure leak while protecting growth and breathing.
Make the clinical decision
You are the cleft-team feeding specialist.
Mateo takes 42 minutes per feed, has nasal milk escape, and is falling off his weight curve without cough or color change.
AStart assisted-flow feeding education and close growth follow-up.
BTell the family to make him suck harder with a standard rigid bottle.
CSchedule emergency lip surgery as the feeding treatment.
Choose today's feeding plan and cite the mechanism plus monitoring evidence.
Evidence required
ANA06-E1 + ANA06-E2 Claim ceiling
You may recommend the supplied educational support plan. You may not rule out swallowing or airway disease if new safety signs appear.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 6: Why Feeding Fails, and What Helps Right Now
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
- A involves one side; a cleft involves both, leaving a central segment standing forward and a short .
- A runs through the full structure; an incomplete lip spares a bridge of skin called a .
If not, review
Today's new idea is only
Mateo's feeding problem is a missing wall, not weak muscles; we feed around it until surgery rebuilds it.
Goal: Explain why an open prevents an infant from generating suction, and recommend feeding interventions that compensate, using Mateo's .
Know by the end
- Normal feeding needs : a partial vacuum made by sealing the mouth and lowering the pressure inside it.
- Building that vacuum requires a closed chamber, and the roof of the mouth is the wall that seals the mouth off from the nose.
- Mateo's makes mouth and nose one space, so he cannot hold a vacuum and suction feeding fails.
- Before surgery the fix is to bypass suction: a and , with careful weight tracking.
1
Why suction fails
Model start: A normal feed depends on , a partial vacuum the baby makes by sealing the mouth, and that requires a closed chamber.
- The wall that seals the feeding chamber off from the nose is the ____ (roof of the mouth).
- Mateo has an , so mouth and nose are one space and suction feeding ____.
2
The interventions
- A ____ bottle delivers milk by gentle caregiver squeezing, so flow does not depend on the baby's suction.
- ____ positioning (more vertical) lets gravity carry milk down and away from the nose, lowering nasal escape and airway risk.
3
The reframe
- Mateo's problem is not weak muscles; it is a ____ wall, so we feed around it until surgery rebuilds it.
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 feeding problem is a missing wall, not weak muscles; we feed around it until surgery rebuilds it.
Words to unlock first
intraoral negative pressureoronasal communicationcompressible bottleupright positioningaspiration
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 respiratory-digestive interface
WebXam domain
Molecular and Genetic Technology
Evidence to produce
Write Mateo's one-page feeding plan for his parents: (1) one sentence naming the anatomical reason in plain language, (2) the bottle type you recommend and why it removes the need for suction, (3) the position you recommend and the two problems it reduces, and (4) the single number you will watch each week to know the plan is working. Keep it warm.
Lab / skill
Human Body Systems (HBS)
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.
How this is graded (rubric)
For: Write Mateo's one-page feeding plan for his parents: (1) one sentence naming the anatomical reason in plain language, (2) the bottle type you recommend and why it removes the need for suction, (3) the position you recommend and the two problems it reduces, and (4) the single number you will watch each week to know the plan is working. Keep it warm.
| 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 "Write Mateo's one-page feeding plan for his parents: (1) one sentence naming the anatomical reason in plain language, (2) the bottle type you recommend and why it removes the need for suction, (3) the position you recommend and the two problems it reduces, and (4) the single number you will watch each week to know the plan is working. Keep it warm.".
- 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 can keep Mateo fed today by working around the gap. But the gap is wide, and the wider it is, the harder the lip repair will be. Could we gently shape and narrow the before any operation so feeding gets easier and the surgery starts from a better position? We chase that next time.