91. Lens and Supporting Structures 92. Intrinsic Arteries and Veins of Eye 93. Vascular Supply of Eye 94. Pathway of Sound Reception 95. External Ear and Tympanic Cavity 96. Tympanic Cavity 97. Bony and Membranous Labyrinths 98. Bony and Membranous Labyrinths (continued) 99. Orientation of Labyrinths in Skull