Morphological study on the development of the tongue in fetuses and neonates of Korean native goat (Capra hircus)

Cho, Cyu-Hyen; Kim, Chong-Sup; Koh, Phil-Ok; Kang, Byoung-Il; Lee, Jong-Hwan; Won, Chung-Kil

Korean Journal of Veterinary Research 2005;45(4):477-483.

Cyu-Hyen Cho¹, Chong-Sup Kim¹, Phil-Ok Koh¹, Byoung-Il Kang¹, Jong-Hwan Lee², Chung-Kil Won¹

¹Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University
²College of Veterinary Medicine, Konkuk University

한국재래산양(Capra hircus)의 태아 및 신생아의 혀 발달에 관한 형태학적 연구

조규현¹, 김종섭¹, 고필옥¹, 강병일¹, 이종환², 원청길¹

¹경상대학교 수의과대학 동물의학연구소
²건국대학교 수의과대학

Abstract

This study was carried out to investigate the morphological development of the tongue in the 60-, 90- and 120-day-old fetuses and neonates of Korean native goats by light microscopy. In 60-day-old fetuses, the tongue tissues were differentiated into epithelium, lamina propria, and muscle layer. The primordia of filiform, conical, lentiform, fungiform, and vallate papillae appeared by this time, and rudiments of taste buds were observed in the epithelia of the primordia gustatory papillae. The dorsal lingual epithelia were PAS positive. Collagenous fibers and blood vessels were present in the lamina propria. In 90-day-old fetuses, the gustatory glands were moderately positive for PAS and muscle fibers, and connective tissues were developed. In 120-day-old fetuses, many taste buds were observed in the gustatory papillae. The muscle bundles, collagenous fibers, blood vessels and gustatory glands were well developed. In neonates, over 40 taste buds were found in a transverse section of the vallate papillae. Muscle layers, blood vessels, collagenous fibers and gustatory glands were very well developed.

Key Words: development, Korean native goat, papillae, taste bud, tongue