THE ANATOMY OF THE EUSTACHIAN-TUBE IN THE RAT - A MACROSCOPICAL AND MICROSCOPICAL STUDY
THE ANATOMY OF THE EUSTACHIAN-TUBE IN THE RAT - A MACROSCOPICAL AND MICROSCOPICAL STUDY
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DOI：
10.1002/ar.1092070313
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发表时间：
1983-01-01
影响因子：
--
通讯作者：
SODERBERG, O
中科院分区：
文献类型：
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作者：
ALBIIN, N;HELLSTROM, S;SODERBERG, O
大鼠咽鼓管（ET），从鼻咽口到鼓室口，是. apprx。4.5 mm长，其中鼻内侧膜部（鼻咽口）的尺寸为apprx。1.5 mm和枕外侧骨部分。鼻咽口被2个柔软的唇状粘膜囊包绕，1个位于腹侧，1个位于颅侧，均易于移动的。与输卵管开放机制相关的肌肉是输卵管咽肌、腭帆张肌和腭帆提肌。输卵管咽肌部分起源于颅唇，而腭肌部分起源于腹唇。鼓膜的2/3的粘膜衬里的ET是由软骨引导的颅侧和不完全的框架由骨结构。鼓室口位于内侧壁的鼻侧部分，远高于鼓泡底部。鼓张肌似乎不参与ET的开放和关闭机制。ET的粘膜衬里由呼吸上皮和固有层中的许多腺体组成。输卵管肌肉通过移动鼻咽口的唇状褶皱来控制通过ET的通道。大鼠ET的解剖结构与人类中描述的相当;大鼠ET可能是研究人类ET功能的良好模型。
The rat eustachian tube (ET), from the nasopharyngeal orifice to the tympanal orifice, is .apprx. 4.5 mm long, of which the naso-medial membranous part (the nasopharyngeal orifice) measures .apprx. 1.5 mm and the occipito-lateral bony portion .apprx. 3 mm. The nasopharyngeal orifice is surrounded by 2 soft, lip-like, mucosal swellings, 1 ventral and 1 cranial, both easily mobile. The muscles related to the tubal opening mechanisms are the salpingopharyngeus, the tensor veli palatini and the levator veli palatini muscles. The salpingopharyngeus muscle originates partly from the cranial lip, whereas the palatal muscles originate partly from the ventral lip. The tympanal 2/3 of the mucosal lining of the ET is cranially guided by a cartilage and incompletely framed by bony structures. The tympanal orifice is situated in the nasal part of the medial wall, well above the floor of the bulla. The tensa tympani muscle does not seem to take part in the opening and closing mechanisms of the ET. The mucosal lining of the ET consists of a respiratory epithelium with numerous glands in the lamina propria. The tubal muscles control the passage through the ET by moving the lip-like folds of the nasopharyngeal orifice. The anatomy of the rat ET is comparable to that described in humans; rat ET might be a good model for studying the function of the human ET.