Richardson Lucy E, Wakley Glenn K, Franklin Samantha H
Department of Anatomy, University of Bristol, School of Veterinary Science, Southwell Street, Bristol BS2 9EJ, UK.
Vet J. 2006 Jul;172(1):78-85. doi: 10.1016/j.tvjl.2005.02.032.
Dorsal displacement of the soft palate is a common cause of upper airway obstruction in racehorses and is of unknown aetiology. To determine whether the palate may displace for structural reasons, knowledge of the normal soft palate is required. The present study aimed to describe, qualitatively and quantitatively, the structure of the normal equine soft palate using histomorphometry. In soft palates from 12 Thoroughbreds, glandular tissue predominated (ca. 40% of total area), located mainly in the rostral and ventral regions. Rostrally, muscles attached to a tendinous aponeurosis located dorsal to the glandular tissue. Muscle was most abundant in the dorsal mid region and decreased caudally. The oral mucosa consisted of a non-keratinised stratified squamous epithelium whereas the nasopharyngeal mucosa was pseudostratified, columnar and ciliated. Elastin fibres were observed in the nasopharyngeal submucosa, becoming more prevalent caudally. The palates were bilaterally symmetrical although the proportion of tissue types varied considerably between individuals.
软腭背侧移位是赛马气道上部阻塞的常见原因，其病因不明。为了确定软腭是否因结构原因而移位，需要了解正常软腭的情况。本研究旨在通过组织形态计量学对正常马软腭的结构进行定性和定量描述。在12匹纯种马的软腭中，腺组织占主导地位（约占总面积的40%），主要位于吻侧和腹侧区域。在吻侧，肌肉附着于腺组织背侧的腱膜。肌肉在背侧中部最为丰富，向尾侧逐渐减少。口腔黏膜由非角化复层鳞状上皮组成，而鼻咽黏膜为假复层柱状纤毛上皮。在鼻咽黏膜下层观察到弹性纤维，在尾侧更为普遍。尽管个体之间组织类型的比例差异很大，但软腭两侧对称。
