Sichel J Y, Plotnik M, Cherny L, Sohmer H, Elidan J
Department of Otolaryngology-Head and Neck Surgery, Hadassah University Hospital, Jerusalem, Israel.
J Otolaryngol. 1999 Aug;28(4):217-22.
This study was conducted to investigate and describe the anatomical details of the ear of the fat sand rat (Psammomys obesus).
Thirty ears (15 in dry skull and 15 in live animals) were dissected with the aid of an operating microscope and microsurgical techniques. Photographs were taken through an operating microscope.
The temporal bone of the fat sand rat consists mainly of an unusually large bulla. Three distinct auditory ossicles were visualized and the manubrium of the malleus is relatively long in relation to the size of the ear. Most parts of the inner ear bulge into the bulla cavity and are easily accessible. The cochlea consists of 3.25 turns. The tympanic membrane, facial nerve, stapedial artery, and eustachian tube are described in detail. The large size of the bulla is probably related to the high sensitivity, particularly at low frequencies of the animals ear.
The fat sand rat was found to be an excellent experimental animal for the investigation of middle and inner ear physiology.
本研究旨在调查并描述肥沙鼠（肥胖棕毛鼠）耳部的解剖细节。
借助手术显微镜和显微外科技术解剖30只耳朵（15只来自干燥颅骨，15只来自活体动物）。通过手术显微镜拍照。
肥沙鼠的颞骨主要由一个异常大的鼓泡组成。可见三个不同的听小骨，锤骨柄相对于耳朵大小而言较长。内耳的大部分部分突入鼓泡腔且易于观察。耳蜗由3.25圈组成。详细描述了鼓膜、面神经、镫骨动脉和咽鼓管。鼓泡较大可能与动物耳朵的高灵敏度有关，尤其是在低频时。
发现肥沙鼠是研究中耳和内耳生理学的优良实验动物。
Zotero 插件