Image Based Question-66132

Identify the structures marked as 1, 2 , 3 , 4 in the picture below ?

A. 1-Handle of malleus.

2-Long process of incus.

3-Body of incus.

4-Tympanic membrane.

B. 1-Tympanic membrane.

2-Long process of incus.

3-Body of incus.

4-Handle of malleus.

C. 1-Handle of malleus.

2-Long process of incus.

3-Tympanic membrane.

4-Body of incus.

D. 1-Handle of malleus.

2-Body of incus..

3-Long process of incus

4-Tympanic membrane.

Correct Answer » A Explanation

1-Handle of malleus.

2-Long process of incus.

3-Body of incus.

4-Tympanic membrane.

In the image,retraced tympanic membrane is seen with Attic retraction.Body of incus is seen in the Attic region.

RETRACTED TYMPANIC MEMBRANE

• Dull and lusterless

• Cone of light – absent or interrupted

• Handle of malleus – foreshortened

• Lateral process of malleus – more prominent

• Anterior and posterior malleal folds – sickle shaped

• Results from negative intratympanic pressure when ET is blocked