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Volume 69 (1992 - 199･･･
- Issue 6 Pages 253-
- Issue 5 Pages 199-
- Issue 4 Pages 145-
- Issue 2-3 Pages 77-
- Issue 1 Pages 1-
Predecessor
Volume 69, Issue 4
Displaying 1-6 of 6 articles from this issue
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Lianjia YANG, Huiyun WANG, Meiqing WANG, Yoshikuni OHTA, Fumihiko SUWA1992 Volume 69 Issue 4 Pages 145-155
Published: October 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSUsing 12 human fetuses, histological development and changes in connective fiber structure and fine vascular patterns have been investigated in various fetal gestational stages by light and scanning electron microscopy. The main arterial supply of the articular disc was from the bilaminar region and pterygoideus lateralis muscle. The vascular network on the disc surface was related with fluid secretion. When the bilaminar region was compressed, it caused ischemia and fibrosis as the main pathological changes in TMJ derangement. A decrease in fluid from blood vessels might occur in TMJ degeneration. Collagen fibers in the disc passed mainly anteroposteriorly. In the anterior and posterior bands, muscular tendon fibers came from the pterygoideus lateralis muscle and superior stratum of the bilaminar region. In the posterior band three-dimensional structures of collagen fibers suitable for load bearing were observed. The compass network and process on the disc showed the normal structure that is formed gradually and has functions including dispersion, pressure bearing, friction-proofing and storage of the synovial fluid. Attachments of the disc were suitable for disc function. Large elastic fibers in the posterolateral part of the superior stratum of the bilaminar region may be antagonistic to the upper head of the pterygoideus lateralis muscle fibers passing medioanteriorly, indicating that this antagonism is available for disc function.View full abstractDownload PDF (3744K) -
Jun-ichi MATSUSHITA, Akimichi TAKEMURA1992 Volume 69 Issue 4 Pages 157-167
Published: October 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThere are few reports on the vascular system of the lion or Panthera leo except for that on the facial artery investigated by Lin and Takemura (1990). Morphological analysis of the masseter muscle of the lion according to the muscle-tendon theory has been performed only by Takemura et al. (1991). The present authors attempted to elucidate the blood supply of the masseter, using 3 lion heads injected with acryl plastic into the carotid system by the plastic vascular injection method. This description is based on examination of the detailed laminar formation of the masseter. The findings are discussed in comparison with those of the felid family in carnivorae. Masseteric branches of the superficial temporal, buccal and facial arteries were distributed to the primary sublayer of the superficial layer, those of the above arteries and the masseteric artery to its secondary sublayer, the intermediate layer and the anterior and posterior portions of the deep layer, and those of the superficial temporal and masseteric arteries to the primary sublayer of the posterior portion of the deep layer. The maxillomandibularis muscle was supplied by the buccal and masseteric arteries and the zygomaticomandibularis by the superficial temporal and posterior auricular arteries as well. No gross differences between the lion and cat were observed in arterial supply of the masseter proper and improper, although the superficial temporal artery was distributed only to the superficial and intermediate layers in the cat but to all the deep layers in the lion.View full abstractDownload PDF (4297K) -
Mehtap YUKSEL, Selda ONDEROGLU, Zeynep ARIK1992 Volume 69 Issue 4 Pages 169-171
Published: October 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSA variation of the abductor pollicis longus muscle in a 65 year old cadaver was encountered during routine dissection in our department. The muscle was found to split into two bellies and give off two tendons, one of which inserted to the abductor pollicis brevis, opponens pollicis and flexor pollicis brevis muscles. The other tendon inserted to the first metacarpal bone which is considered a normal insertion site for the abductor pollicis longus muscle.View full abstractDownload PDF (1359K) -
Mehtap YUKSEL, Mustafa SARGON1992 Volume 69 Issue 4 Pages 173-175
Published: October 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe coeliac trunk is a wide branch of the abdominal aorta which arises from just below the aortic hiatus. It is about 1.25 cm. long (5). In our cadaver the length of the coeliac trunk was observed to be 4.5 cm. Additionally the inferior phrenic arteries which normally arise from the abdominal aorta were derived from the coeliac artery.View full abstractDownload PDF (784K) -
Kunihiko KIMURA1992 Volume 69 Issue 4 Pages 177-182
Published: October 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSOn the basis of cross-sectional data of 630 boys and 611 girls aged 0 to 19 years investigated during 1959-60, the present study attempts to estimate age from skeletal maturity and measurements (length, width and cortical thickness) of an isolated second metacarpal. A combination of the maturity score with the bone length gives a better estimate of age than either one of the bone measurements or a combination of them. However, the maturity score alone does not necessarily provide a better estimate of age than the bone length. In skeletal remains of immature children, the epiphysis is not usually available to estimate age. Age could be estimated by means of multiple linear equations from the diaphyseal length and width of the second metacarpal with a standard error of 1.26 years in immature children aged 6 to 17 years, regardless of sex. Although, this method certainly seems to be useful for age estimation of a population, it is not necessarily applicable to individuals. In addition, the equation obtained from the variables in this series is not universally applicable to other populations or to Japanese of earlier eras, with the same degree of certainty.View full abstractDownload PDF (1999K) -
Masahiko NAKAMURA, Shigenori OKADA1992 Volume 69 Issue 4 Pages 183-197
Published: October 20, 1992
Released on J-STAGE: September 24, 2012
JOURNAL FREE ACCESSThe microvascular architecture of all kinds of lingual papillae in the Japanese monkey was investigated on plastic corrosion casts and epithelium-separated specimens under a scanning electron microscope. Three kinds of the filiform papillae were observed; the circularly-arranged papillae with a small papilla in the center on the lingual apex, a simple large conical papilla with a bilateral pair of spines on the lingual body and the aggregated filiform papillae on the top of an epithelial projection on the lingual radix. Five to eight capillary loops were arranged in a circle of the above filiform papillae on the lingual apex. Arterioles ascended in the filiform center on the lingual body to form an intrapapillary network in the shape of a large cone, from which capillary loops were observed only on the top surface of the papilla. Capillary loops arising from the subepithelial capillary network in the epithelial projection were distributed to each filiform papilla on the lingual radix. Globular fungiform papilla on the lingual apex were supplied by capillary loops radiating from the intrapapillary capillary network. Cylindrical fungiform papillae on the lingual body were supplied by capillary loops only on the top surface of each fungiform papilla without any loop formation on the lateral surface. Four vallate papillae, a medial and lateral pair, were supplied by arterioles ascending in the papillary center to form an intrapapillary capillary network, from which capillary loops were sent off on the top surface of the papilla and formed a network in the lateral surface. Each foliate papilla was supplied by an arteriole passing through each papillary center along the long axis and 5 or 6 capillary loops from the arteriole on the frontal section. Every lingual papilla was supplied by a characteristic microvascular pattern, which correlated closely with the location of the papillae and areas reflecting the regional role of the tongue movement, especially in the filiform and fungiform papillae.View full abstractDownload PDF (5570K)
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