External ear 3 tympanic membrane鼓膜: Flaccid part松弛部: upper114 Tense part紧张部: lower3/4 Umbo of tympanic membrance 鼓膜脐 Cone of light光锥
External ear 3. tympanic membrane 鼓膜: Flaccid part 松弛部: upper 1/4 Tense part 紧张部: lower 3/4 Umbo of tympanic membrance Cone of light 光锥 鼓膜脐
Middle ear中耳 Consists of three parts Tympanic cavity鼓室 Auditory tube咽鼓管 Mastoid antrum乳突窦 and mastoid cells乳突小房 外耳 内耳 何 的?
Consists of three parts ◼ Tympanic cavity 鼓室 ◼ Auditory tube 咽鼓管 ◼ Mastoid antrum 乳突窦and mastoid cells 乳突小房 Middle ear 中耳
Tympanic cavity鼓宣 Position: An irregular air-filled cavity locates within the temporal bone, and lies between the tympanic membrane and the lateral wall of the inner ear内耳 It contains the auditory ossicles听小骨, ligaments, muscles, vessels and nerves
◼ Position: An irregular air-filled cavity locates within the temporal bone, and lies between the tympanic membrane and the lateral wall of the inner ear 内耳. • It contains the auditory ossicles听小骨, ligaments, muscles, vessels and nerves. Tympanic cavity 鼓室
Middle ear中耳 Boundaries. (1) Roof or tegmental wal|鼓室盖 (2) inferior wall or jugular wal预顶静脉壁: separates the cavity from superior bulb of internal jugular V Stapes in oval window Aenor MEDIAL condary tympane momorarel canal meatus Eardrum memhrane and fron the mien
Middle ear 中耳 ◼ Boundaries: (1) Roof or tegmental wall 鼓室盖: (2) inferior wall or jugular wall颈静脉壁: separates the cavity from superior bulb of internal jugular v
Tympanic cavity鼓宣 (3) Anterior wall or carotid wal颈动脉壁:□ Upper opening for tensor tympani m lower opening for auditory tube咽鼓管鼓室口 (4) Posterior wall or mastoid wal乳突壁 Aditus of mastoid antrum:乳突窦的入口; Pyramidal eminence锥隆起:内藏镫骨肌
(3) Anterior wall or carotid wall 颈动脉壁 : Upper opening for tensor tympani m. lower opening for auditory tube 咽鼓管鼓室口 (4) Posterior wall or mastoid wall 乳突壁: Aditus of mastoid antrum: 乳突窦的入口； Pyramidal eminence 锥隆起： 内藏镫骨肌. Tympanic cavity 鼓室