ENT In the pathogenesis of otosclerosis, the disease process starts in: A Periosteal layer of otic capsule B Endosteal layer of otic capsule C Bone of otic capsule which develops from cartilage D Mucoperiosteum of the promontory 💡 Explanation In the pathogenesis of otosclerosis, the disease process starts in: ✓ Correct Answer: C. Bone of otic capsule which develops from cartilage