This is a high magnification histological section.

What type of blood vessel is labelled 'A'? What type of blood vessel is labelled 'B'?

This low magnification histological section shows two different blood vessel types for comparison. At this level, corresponding blood vessels can often be found in close proximity to one another.

What blood vessel type is labelled 'A'?

This transverse histological image is an example of what type of blood vessel?

Atria & Auricles

The atria have out-pouches called auricles (= 'ears'). These are visible mostly from the anterior view of the heart. Internally, the auricles of the atria contain mostly pectinate muscle.

On this image above which labels indicate the right and left auricles of the atria? Select 2 options

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 (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:

1. Select and label

   key morphological features visible in both the fetal and neonatal lung. Use different magnifications where useful.

2. Compare the two lungs

   – clearly identify the major differences you can see between the fetal and neonatal specimens using descriptive labels where appropriate.

3. 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

   .

4. Link your observations to lung development using relevant concepts from the Lung Development lecture

   .

5. 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 slides

• Maximum

  1 A4 page

• Minimum

  12-point font

• Use

  labels and short annotations

  directly 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.