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DEV2022 - Human anatomy and development: Tissues and body systems - S2 2026
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Visit https://radiopaedia.org/cases/normal-ct-chest?lang=gb
Scrolling through these sets of images (coronal lung window), determine what the labelled structures below correspond to:
Visit https://radiopaedia.org/cases/normal-ct-chest?lang=gb
Scrolling through these sets of images (coronal lung window), determine what the labelled structures below correspond to:
Visit https://radiopaedia.org/cases/normal-ct-chest?lang=gb
Scrolling through these sets of images, determine what the labelled structures below correspond to:
Visit https://radiopaedia.org/cases/normal-ct-chest?lang=gb
Scrolling through these sets of images, determine what the labelled structures below correspond to:
PART 2: Fetal vs Neonatal Lung – Structure, Function and Development
This is a slide of the fetal rat. Using this designated fetal slide below, and the neonatal lung virtual slide from PART 1, create a one-page annotated comparison of the two lungs at the different developmental stages.
What you need to do
Using no more than 4 images in total:
- Select and label
key morphological features visible in both the fetal and neonatal lung. Use different magnifications where useful.
- Compare the two lungs
– clearly identify the major differences you can see between the fetal and neonatal specimens using descriptive labels where appropriate.
- Explain what the differences mean using descriptive labels– link the morphology you observe to function, particularly the change from a fluid-filled fetal lung to an air-breathing neonatal lung
.
- Link your observations to lung development using relevant concepts from the Lung Development lecture
.
- Estimate the developmental stage of the fetal lung as if it were a human specimen. Give a brief justification based on the histological features you can see
.
Although the designated fetal specimen is from rat and the neonatal specimen is from human, for the purposes of this assessment assume that the specimens represent the same species. Do not use species differences to explain your observations. Focus only on developmental differences that can be supported by the histological features visible in the slides.
This task allows some flexibility in how you choose to present and annotate your comparison. Where you use references or other sources, including the Lung Development lecture notes, these should be appropriately acknowledged within your one-page submission.
Submission requirements
Maximum
4 images, taken only from the designated virtual slidesMaximum
1 A4 pageMinimum
12-point fontUse
labels and short annotationsdirectly on/alongside your images
Submit as a
PDF
Keep the focus on what you can SEE in the slides. You are being assessed on your ability to identify, compare and interpret the morphology, not on providing a general description of lung development.
Criterion
|
Excellent
|
Good
|
Developing
|
Limited / Not demonstrated
|
Marks
|
Selection & labelling of morphological features
|
Images are well selected across appropriate magnifications. Key features in both fetal and neonatal lung are accurately identified and clearly labelled.
|
Appropriate images and most key features are correctly identified and labelled; minor omissions/errors.
|
Some relevant features identified, but important structures are missing, unclear or incorrectly labelled.
|
Few relevant features identified and/or substantial inaccuracies.
|
/4
|
Comparison of fetal vs neonatal morphology
|
Makes clear, direct comparisons between the specimens, identifying the major morphological differences visible in the slides.
|
Identifies several relevant differences, with generally effective comparison between specimens.
|
Describes both specimens but comparison is limited or largely separate rather than direct.
|
Minimal comparison or observations are largely generic/not supported by the slides.
|
/4
|
Structure–function interpretation
|
Clearly explains (using descriptive labels) why the observed morphology differs, linking specific features to fetal versus neonatal lung from a fluid-filled to air-breathing lung.
|
Appropriate structure–function links with mostly clear explanations.
|
Some structure–function links, but explanations are superficial or not consistently tied to visible morphology.
|
Limited or inaccurate understanding of the functional significance of the observed differences.
|
/4
|
Application of lung development concepts
|
Effectively applies relevant concepts from the Lung Development lecture to interpret specific features observed in the specimens.
|
Appropriate developmental concepts applied, with some connection to observed morphology.
|
Some relevant developmental knowledge included, but largely descriptive or weakly connected to the specimens.
|
Little relevant application of developmental concepts and/or predominantly generic information.
|
/4
|
Fetal developmental stage & justification
|
Provides a plausible human developmental stage, justified using multiple specific morphological features visible in the images.
|
Plausible stage with appropriate morphological justification.
|
Stage suggested but justification is limited, vague or only partly supported by the specimen.
|
Stage is unsupported/inaccurate or not attempted.
|
/4
|
Presentation & requirements
|
Clear, concise and visually effective use of images and descriptive labels. Meets all requirements: ≤4 images, ≤1 A4 page, ≥12-point font, PDF.
|
Generally clear presentation with minor issues.
|
Presentation makes interpretation difficult and/or requirements are not fully followed.
|
Poorly organised or substantial requirements not followed.
|
/4
|
TOTAL
|
/24
|
PART 1: Lung Structure
Using this virtual histology slide of neonate lung label the following structures.
| Task using your assigned virtual slide above | Marks |
|---|---|
| Bronchus | |
| Identify and label one cross-section of a bronchus | 2 |
| Label the epithelium lining the bronchus | 2 |
| Classify the epithelium | 2 |
| Label and name the epithelial surface specialisations | 2 |
| Label hyaline cartilage around the bronchus | 2 |
| Label the submucosal connective tissue surrounding the bronchus | 2 |
| Label smooth muscle surrounding the bronchus | 2 |
| Bronchioles | |
| Identify and label one cross-section of a conducting or terminal bronchiole | 2 |
| Label the basement membrane of the bronchiole | 2 |
| Label smooth muscle surrounding the bronchiole | 2 |
| Gas-exchange region | |
| Identify and label several alveoli | 2 |
| Blood vessels | |
| Identify and label two blood vessels | 2 |
| Identify and label visceral Pleura | 3 |
| Total | 27 marks |
Take screenshots at different magnifications of the assigned slide to visualise and label all the structures clearly.
Must use snapshots at the appropriate magnification
- Include up to 5 images/screenshots in your answer
No more than TWO A4-pages of work (images with labels)
No smaller than 12-point font
Convert your file to a PDF
The blood-air barrier:
Intercostal Catheterisation: Applying Body Wall Anatomy Clinically
Image from AN@TOMEDIA ONLINE Eizenberg N, Briggs C, Barker P & Grkovic I: Access directly via: LINK HERE (go to Thorax; Dissection; for tips!)
Use Lecture "Anatomy of Body Wall" as your guide
Examine the donor specimen image carefully. Use the position of the catheter and the anatomical structures visible in the specimen to answer the following questions.
Look at the catheter where it crosses the thoracic wall. Which structure is represented by the pale blue/green oval structure close to the catheter?
The catheter tip is visible within a space between the inner thoracic wall and the surface of the lung. What is this space?
Follow the lung surface immediately deep to the catheter tip. Which membrane is directly adherent to the lung?