巻号一覧
56 巻, 6 号
選択された号の論文の4件中1～4を表示しています
- |<
- <
- 1
- >
- >|
-
TOSHIO YAMASHITA, AKIRA TAKAHASHI, RYOHEI HONJIN1980 年 56 巻 6 号 p. 329-335
発行日: 1980/03/20
公開日: 2012/09/24
ジャーナル フリーThe spatial aspect of the mouse orbital venous sinus and its topographical relation to the venous system of the head were studied in serial sections by light microscopy. The orbital venous sinus was found to extend between the orbital wall and the muscle cone and had a huge invaginated sac, which began from the antero-medial part of the sinus and enveloped most of Harder's gland. The orbital venous sinus received almost all the venous drainage from the eyeball, muscle cone, Harder's gland and conjunctiva, and communicated with the cavernous sinus, pterygoid plexus, superficial temporal vein and facial vein.
The mouse orbital venous sinus may correspon d to the human superior and inferior ophthalmic veins. As well as draining blood from the orbital contents, it may play a significant role in producing exophthalmos when on the alert, in absorbing shock from the exterior to the orbital contents, and in promoting secretion from Harder's gland抄録全体を表示PDF形式でダウンロード (1271K) -
TAKAO SETOGUTI, MICHIKO TAKAGI1980 年 56 巻 6 号 p. 337-359
発行日: 1980/03/20
公開日: 2012/09/24
ジャーナル フリーThe electron microscopic localization of phosphatases was observed in adult dogs, and that of cytochrome oxidase in an old dog. In the parenchymal cells, intense activities of alkaline phosphatae and adenosine triphosphatase were demonstrated both on the plasma membranes facing the perivascular space and on their transitional portions to the lateral plasma membranes. However, they were less intense or negative on the remaining plasma membranes, suggesting that the plasma membranes of the parenchymal cells have a functional polarity.
In the parenchymal cells, activities of thiamine pyrophosphatase and inosine diphosphatase were restricted to one or two layers of cisternae or saccules at the inner face of the Golgi apparatus, and in some chief cells the latter enzyme activities were also detected on the cisternae of the granular endoplasmic reticulum. On the other hand, acid phosphatase activities were observed on almost the entire Golgi lamellae and on most of their associated vacuoles and vesicles, besides lysosomes and some lipofuscin granules. Acid phosphatase-positive GERL-like structures were found surrounded by Golgi lamellae.
In the blood vessels including the capillaries, activities of all the phosphatases tested except the acid type were positively observed, particularly on the caveolae or pinocytotic vesicles along the capillary luminal surface and the apposing plasma membranes between endothelial and smooth muscle cells.
Cytochrome oxidase activities were localized in the mitochondrial membranes including the cristae, but were variable in intensity even in each mitochondrion within a single cell as well as among the parenchymal cells. Some of the bizarre mitochondria with longitudinal cristae which were characteristic of the old dog parathyroid, exhibited strong activities on their cristae.抄録全体を表示PDF形式でダウンロード (5817K) -
TORU IWASHITA, CHIKAYOSHI OURA1980 年 56 巻 6 号 p. 361-381
発行日: 1980/03/20
公開日: 2012/09/24
ジャーナル フリーThe cauda epididymidis of the mouse was used as material, and the neck region of the spermatozoon was observed with an electron microscope. The orientation of the neck region was differentiated as follows: The concave and convex surfaces of the sickle-shaped sperm head were termed the ventral and dorsal surfaces respectively. Viewed from the ventral surface, the two fiattend surfaces of the sperm head were designated as the right side and the left side. A serial section analysis of the capitellum and striated columns in a three dimensional pattern has been described.
The capitellum is situated a little lower (400-600A) than the basal plate and shows a desk telephone-like shape. It consists of two parts, a smaller ventral part which seems to correspond in shape to the telephone receiver and other larger dorsal part which corresponds to the dial box. The smaller ventral part is closed and amorphous in density. The larger dorsal part is partially connected with the center of the ventral part, and 2-3 discs of the striated columns are enclosed within and covered by it. The segmented discs at the highest part of the striated columns consist of two large ventral and dorsal discs. Although striated columns of the ventral group were found surrounding the proximal centriole, the dorsal group were definitely separated from the proximal centriole. The upper ends of the nine columns were seen as two groups, one of which was a fused disc of Nos.8,9,1and 2 and other was a fused disc of Nos.3,4,5,6 and 7. These discs of the striated columns situated at Nos.3 and 7 are gradually separated at the upper part of the neck region, and then Nos.4,5 and 6 are separated at the middle part of the neck region. Between Nos.8,9 and Nos.1,2 is a separation along approximately the upper 2/3 portion of the neck region. Because the proximal centriole was located between No.9 and No.1 of the ventral group (a large fused disc of Nos.8,9,1 and 2) it divided the large disc into two small discs. However, directly below the proximal centriole, Nos.8,9,1 and 2 were fused again.抄録全体を表示PDF形式でダウンロード (2889K) -
TOSHIO YAMASHITA, AKIRA TAKAHASHI, RYOHEI HONJIN1980 年 56 巻 6 号 p. 383-387
発行日: 1980/03/20
公開日: 2012/09/24
ジャーナル フリーThe spatial aspect of the mouse orbital muscle was studied in serial sections by light microscopy. Then the fine structure of the muscle was studied by light and electron microscopy.
The orbital muscle is a large membranous smooth muscle which is the sole wall dividing the orbital cavity from the temporal and infratemporal cavities and encloses all of the orbital contents in its course. The orbital muscle arises from the upper portion of the orbital bony wall, the trochlear cartilage, the caruncle and the lacrimal canaliculi, and ends in the lower portion of these organs. The anterior margin of the orbital muscle adheres to the levator palpebrae superioris and tarsal muscles, the orbital septum and the inferior orbital margin. The orbital muscle has membranous arising and attaching tendons which contain a large amount of elastic fibers.
The surface membrane of the smooth muscle cells specializes into two kinds of alternate zones; pinocytosis vescicle-rich zones and vesicle-free zones, the latter of which is attached to many myofilaments and come into close contact with the same kind of zones of another adjacent cell to form a desmosome-like junction with a minute gap of about 400A which contains only one basement lamina. Gap junctions are also often observed between the two smooth muscle cells. The mouse orbital muscle may correspond not only to the human orbital muscle and periorbita covering the inferior orbital fissure but also to the transverse ligament of Whitnall (1910) and the suspensory ligament of Lockwood (1886).
The mouse orbital muscle may function in supporting the orbital contents, especially the eyeball, in regulating blood pressure in the orbital venous sinus and in checking eye movement.抄録全体を表示PDF形式でダウンロード (3139K)
- |<
- <
- 1
- >
- >|