The 'processus cochleariformis' is a bony landmark in the middle ear that serves as a pulley for which structure?
- A Stapedius tendon
- B Tensor tympani tendon ✓
- C Chorda tympani nerve
- D Long process of incus
Correct answer: B. Tensor tympani tendon
Explanation
The processus cochleariformis (cochleariform process) is a tongue-shaped bony projection at the anterior end of the tympanic segment of the facial canal. The tensor tympani muscle runs in the semicanal above the Eustachian tube and its tendon hooks around the processus cochleariformis at nearly 90° before attaching to the malleus handle. This landmark is critical during middle ear surgery as it lies just anterior to the facial nerve's tympanic segment.
Reference: Dhingra Diseases of Ear, Nose and Throat, 7th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.