3D Model Alveoli Anatomy 3D Model (max fbx obj)

3D Models » Medical 3d Models » Anatomy » Respiratory System » 3D Model Alveoli Anatomy

3D Model by VKModels

Alveoli Anatomy High resolution textures. Smootheable.

3000 x 3000 high resolution textures.

Unsmoothed model included.


-Model is centered at 0,0,0.

-All object are named.

-All materials are named.

-No unnecessary objects.

-Model looks like the thumbnails.


Obj, fbx and max files, are compressed in zip files with all materials, textures and folders.

High resolution textures color, bump and reflect map. Standard 3ds max materials and Vray materials included. with .mat and .mtl

363.538 polygons. no smooth

436.828 polygons turbosmooth.


Detailed enough for close-up renders.

In the 1st order respiratory bronchioles, the number of alveoli in the wall is small, in the 2nd respiratory bronchioles there are 2 more, the 3rd order respiratory bronchioles are, even more, the alveolar passages are almost 100% formed by the alveoli, the alveolar sacs are completely formed by the alveoli. Alveolar sacs have a polygonal shape, separated by interalveolar septa 2-8 microns thick. The interalveolar septa are represented by the walls of the alveoli, the connective tissue elements located between them (elastic, collagen and reticular fibers) and the network of capillaries involved in gas exchange. Some alveoli communicate with each other due to holes in the interalveolar septa (“Kora pores”).

The total number of alveoli in both human lungs is 600–700 million. The diameter of one alveoli of a newborn child is on average 150 microns, an adult - 280 microns, in old age, reaches 300-350 microns. The total surface area of ​​the alveoli varies from 40 m² when you exhale to 120 m²

The inner layer of the alveolar wall is formed by respiratory alveoli (alveoli of the 1st type) and large (secretory) alveoli (alveoli of the 2nd type), alveolar macrophages (alveoli of the 3rd type). Type 1 alveoli involved in gas exchange occupy a much larger area (97.5% of the inner surface of the alveoli) than type 2 alveoli (granular, cuboid, secretory cells). Like alveoli of the 1st type, alveoli of the 2nd type are located on the basement membrane; these cells produce a surfactant - a surfactant lining the inside of the alveoli and preventing them from falling. In the aggregate, alveoli of all types form the alveolar epithelium and lie on the basement membrane.

The aerohematic (air-blood) barrier between the alveolar air and the pulmonary capillaries is formed by the thinned cytoplasm of the respiratory alveoli, the basement membrane of the alveolar epithelium, and the wall of the pulmonary capillary and is 0.5 μm. In some places, the basement membranes diverge, forming cracks filled with elements of connective tissue. Each capillary is involved in gas exchange with several alveoli.

Available Sample File for Download

card Safety
Delivery Format: Download Only!

Available Source 3D Model File Formats


  • Vertices283206
  • Polygons363358
  • GeometryPolygonal
  • AnimatedNo
  • MaterialsYes
  • RiggedNo
  • TexturesYes
  • File-formats3D Studio Max file (.max), Autodesk FBX file (.fbx), Wavefront (.obj)
  • PluginsV-Ray
  • NID30159
3D Model ID: 197268

Published on: March 27, 2012
3D Artist: VKModels