Thursday, February 26, 2009

- Anatomy of the External nose.

- The external nose extends the nasal cavities onto the front of the face and positions the nares so that they point downwards.

- The anterior parts of the nasal cavities are held open by a  skeletal framework (i.e external nose ).

- The external nose is pyramidal in shape , has anterior border called "dorsum" and two lateral sides.
- It´s root lies at the naso-facial suture.
- It´s apex called the tip of the nose.
- The septum below the tip of the nose called "columella".
- The opening of the nose to air is called "nostrils" or "anterior nares" which are openings through which air enters nasal cavities...

- The external nose is composed of two parts:

1- Upper bony part:-
which is composed of :

  • Nsal bones which is articulate together in the middle line .
  • Nasal process of frontal bone.
  • Nasal process of maxillry bone.

2- lower cartilagenous part:-
which is composed of :

  • upper lateral cartilage.
  • Major alar cartilage(lower lateral cartilage).
  • Minor alar cartilage at ala nasi.

N.B: Major alar cartilage is composed of two crura lateral and medial.
The two medial crura form "columella".

-Netter anatomy atlas.
-Richard l.darke,wayne vogl& Adam mitchell:Gray´s anatomy for students.
-Mohammed Fareed:Illustrated Otolaryngology.
-Hassan Allam:Manual of Otorhinolaryngology.
-Mansoura E.N.T department:Essentials of Otorhinolaryngology.


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  3. do you have external part of ear ?

    1. i will post it later, i prepare it now :D

  4. Thank you so much, my daughter asked what the columella part was called and I now have the answer

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  22. 18, 2013 at 12:19 PM

    I would be very grateful for any any observations you may have regarding the possible evolutionary adaptations leading to the variation in appearance of external human noses of today and in prehistory? For example, I am puzzled as to whether increase size is a response to cold or, maybe, dusty conditions or both.


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