E0030498

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Not Applicable (or Unknown)

キクガシラ コウモリ ニホン モグラ オポッサム ショウノウ ノ ヒカク カイボウガクテキ ケンキュウ

Comparative anatomical studies on the cerebellum of the bat, mogera and opossum

Japanese (日本語)

Medical journal of Kobe University

41(2)

209-237

1980-03

The cerebellar folia of the bat, mogera and opossum are subdivided from the medullary lamellae and body. For this purpose, the myelin sheath stained sagittal 40μ thick series of the cerebellum 3 bats, 2 mogeras and 3 opossums (Metachirus nudicandatvs, Philander opossum and Didelphis azarae used and as the supplimental guide are made the reconstruction models. Results are as follows. 1) The cerebellar folia are subdivided into 10, namely I to X in the vermis and 6, that is, VH to XH in the hemispherium. VIH to IXH are moreover divided into A and B respectively. 2) The culmen (IV) of the bat and the pyramis (VIII) of the mogera sprout the occult folia from the cerebellar body and lobulus impendens. The culmen of Metachirus nudicandatus consists of IVA and IVB, which sprout directly from the cerebellar body. 3) The lobulus simplex is I surface folium in each animal. 4) The lobulus ansiformis corresponds to the lobulus semilunaris superior and the consists of the I and crus II. The crus I consists of 1 to 2 surface foliae in the bat, 2 in the mogera and 3 to 4 in the opossums and the crus II, 1 in the bat and mogera and 2 in the opossums. 5) The lobulus paramedianus is divided to 3 parts namely the anterior, middle and posterior portion. The anterior portion (VIIHB) is the lobulus semilunaris inferior in a narrow sense and is 1 surface folia in the opossum, 2 in the bat and 2 to 4 in the mogera. The middle portion is the common medullary lamina consisting of the lobulus gracilis (VIIHA) and the rostra I half (VIIIHB) of the lobulus biventer and its common medullary lamina branches off VIIHA and VIIIHB from its apical part. The pcsterior portion (VIIIHA) grows barely. 6) The medial portion of the paraflocculus occupies the caudal part and the caudal third of the ventral part of the cerebellar body. After the cerebellar body is divided into the dorsal and ventral cerebellar body, the paraflocculus dorsalis and paraflccculus ventralis sprout from the dorsal and ventral surface of the ventral cerebellar body respectively. The paraflocculus dorsalis and the paraflocculus ventralis respectively consist of 2 and 2 in the bat, 2 and 2 to 3 in the mogera and 3 to 5 and 3 to 5 in the opossums. 7) The flocculus (XH) sprouts from the middle third of the ventral surface of the cerebellear body and disappears presently. Its development is more predominant in the opossums than the bat and mogera.

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