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ANATOMY / REFERENCE GALLERY1 / 2 references
neonatal circulation: labelled anatomical figure. Original source colours and labels retained.
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Ductus arteriosus

Locate ductus arteriosus on this anatomical reference. Read the original plate labels to confirm the view and adjacent structures.

Zoom in, then drag to inspect. Keyboard: + / − to zoom, arrows to pan, 0 to reset. Tap the numbered markers to explore parts.

neonatal circulation: labelled anatomical figure. Original source colours and labels retained.

Image: OpenStax / University of Hawaiʻi adapted teaching figures; original contributors credited at source · Source / original · CC BY 4.0 — figure credits at source

Numbered markers and focused views are Mediveerse learning overlays; the original reference is linked above.

Circulatory transition at birth

Fetal circulation & transition

Circulatory transition at birth

STRUCTURE & FUNCTION

Understand what you see.

Reorganises fetal circulation into separated pulmonary and systemic circuits after birth.

Zoom into the original labels. Practise pointing out each structure, then explain it aloud. Diagrams are teaching references; specimen appearance and slide staining vary.

01 / IDENTIFICATION

How to recognise it.

  1. Lung expansion lowers pulmonary resistance
  2. Placental separation changes systemic circulation
  3. Atrial pressure relationship changes
02 / KEY STRUCTURES

Point them out.

Tap a number to open its reference, zoom in and locate the structure. Numbers stay the same across views. This key follows landmarks visible in the reference images.

Related features & study points (1)

Additional relations, attachments or microscopic details to revise alongside this plate. These are separate from its numbered image landmarks.

  • Foramen ovale flap
03 / VIVA PRACTICE

Think first. Then reveal.

Say your answer aloud before opening the suggested response.

01How do you identify circulatory transition at birth?
SUGGESTED ANSWER

Lung expansion lowers pulmonary resistance. Placental separation changes systemic circulation. Atrial pressure relationship changes.

02Why does the foramen ovale close functionally?
SUGGESTED ANSWER

Increased pulmonary venous return raises left-atrial pressure relative to right, apposing its flap; anatomical fusion is later and variable.

03Name classic adult shunt remnants.
SUGGESTED ANSWER

Ductus arteriosus becomes ligamentum arteriosum; ductus venosus becomes ligamentum venosum. The fossa ovalis marks the interatrial region.

04Which structures should you point out on this reference?
SUGGESTED ANSWER

Foramen ovale flap; Ductus arteriosus; Umbilical vessels. Reorganises fetal circulation into separated pulmonary and systemic circuits after birth.

Read the references.

Credited anatomical plates, microscopy and university teaching references. Individual image credits appear below the viewer. Historical plates can use older terminology; use the lesson text for current names.