TAILIEUCHUNG - Ebook Essential ENT (2/E): Part 2

(BQ) Part 2 book “Essential ENT” has contents: The ear, the nose and nasopharynx, the paranasal sinuses, the ENT manifestations of HIV and AIDS, procedures in ENT, pharmacology in ENT. | 9 The ear The external ear Clinical anatomy of the external ear Congenital anomalies Ear wax Otitis externa Trauma to the external ear Neoplastic disorders The middle ear Clinical anatomy of the middle ear Symptoms of middle-ear disease Congenital middle-ear conditions Otitis media Trauma to the middle ear Neoplastic disorders Otosclerosis The inner ear Clinical anatomy of the inner ear The mechanism of hearing 93 93 95 95 96 97 98 99 99 103 103 104 110 111 111 111 111 113 The external ear CLINICAL ANATOMY OF THE EXTERNAL EAR The external ear is made up of the auricle or pinna and the external auditory meatus (EAM). Its function is to collect and transmit sound to the tympanic membrane. The auricle The auricle develops from six nodules or hillocks derived from the first two branchial arches and the overlying skin. The auricle is formed by a skeleton of yellow elastic cartilage covered in skin. The auricle consists of a number of named folds (Figure ). The external auditory meatus The EAM is a tube that connects the conchal bowl to the tympanic membrane. It consists of two parts: the outer third is cartilaginous, and the inner or medial two-thirds is bony. Overall, the meatus is Congenital disorders of the inner ear Presbycusis Labyrinthitis Vascular disorders Acoustic trauma Temporal bone trauma Drug ototoxicity Ménière’s disease Benign paroxysmal positional vertigo Vestibular neuronitis Acoustic neuromas and cerebellopontine angle tumours The facial nerve Vertigo Tinnitus Hearing loss Assessment of audiological symptoms 114 115 115 116 116 116 118 118 119 119 120 120 123 123 124 125 24–25 mm long in adults. The skin of the outer third of the meatus is hair-bearing and contains wax and sebaceous glands. These structures are lost in the inner bony meatus, where the skin is thin and hair-free. The two portions of the meatus have slightly different directions – the cartilaginous upward .

• Y khoa - Dược
• Essential ENT
• The ear
• The nose
• The paranasal sinuses
• The ENT manifestations
• Pharmacology in ENT
• The ENT history
• Understanding investigations
• The mouth
• The oesophagus
• The salivary glands
• BMC Chemistry
• Erythroxylum monogynum
• Essential oil
• Auto oxidation
• Epoxy bayeranes
• Axial aldehyde group
• medical books
• pharmacology
• epidemiologic
• Obstetrics
• anatomy
• Preventing Morbidity
• Multidisciplinary Care