Gemmell R T, Selwood L
Department of Anatomical Sciences, University of Queensland, St. Lucia, Brisbane, Australia.
Acta Anat (Basel). 1994;149(1):1-12. doi: 10.1159/000147549.
The structure of various sense organs and endocrine glands was examined in the stripe-faced dunnart, Sminthopsis macroura. This marsupial has the shortest gestation known for all mammals, 10.5-11 days. The morphology of the anterior pituitary, adrenal gland, olfactory epithelium, Merkel cells around the mouth and the utricle of the vestibular system of S. macroura was similar to that observed in other newborn marsupials. These structures are thought to be required by the newborn to transfer from the uterus to the pouch. The stage of development of the urinary system, the semicircular canals of the vestibular system, eyes and lungs was slightly different to that of other newborn marsupials. These structures are thought to have secondary importance in allowing the newborn to reach the teat. Although marsupials display variation in gestation length and produce newborn of differing body weights, there is little difference in morphology between various newborn marsupial species.
对纹脸袋鼬（Sminthopsis macroura）的各种感觉器官和内分泌腺的结构进行了检查。这种有袋动物的妊娠期是所有哺乳动物中最短的，为10.5 - 11天。纹脸袋鼬的垂体前叶、肾上腺、嗅觉上皮、口周的默克尔细胞以及前庭系统的椭圆囊的形态与其他新生有袋动物中观察到的相似。这些结构被认为是新生儿从子宫转移到育儿袋所必需的。泌尿系统、前庭系统的半规管、眼睛和肺的发育阶段与其他新生有袋动物略有不同。这些结构被认为在让新生儿到达乳头方面具有次要重要性。尽管有袋动物的妊娠期长度存在差异且产出的新生个体体重不同，但各种新生有袋动物物种之间在形态上几乎没有差异。
