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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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Scutum is
assistant
The correct answer is  The lateral wall of the middle ear is formed largely by the tympanic membrane and to a lesser extent by the bony outer attic wall called the scutum.Refer: PL Dhingra, Diseases of Ear, Nose & Throat, 7th edition, pg no. 6