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Biomedical subjects

A Namikawa

Publications and source records attributed to A Namikawa.

5 recordsLinked to original sources
PubMed1986

Cleavage lines of the skin.

Detailed investigation on cleavage lines over the entire area of the body was undertaken in 3 each of male and female cadavers. The directions of cleavage lines showed sex and individual differences. Minute comparison of the diagrams obtained in this study with earlier diagrams revealed the presence of delicate differences in the directions of cleavage lines. Microscopical evaluation of cleavage lines showed that in the regions where cleavage lines were linearly arranged, collagen fibers were regularly arranged in a uniform direction, conforming to the direction of cleavage lines from the shallow reticular layer immediately below the papillary layers to the inner reticular layer where sebaceous and sweat glands existed and that in the regions where cleavage lines were ramified, collagen fibers in these layers lacked directional regularity. The morphology of cleavage lines were considered most influenced by collagen fibers in the epidermal reticular layers from their shallow layers immediately below the papillary layers to the layer where sebaceous and sweat glands existed.

Adult↗
PubMed1984

Relation between cleavage lines and scar tissues.

As viewed in relation to cleavage lines, the histological structure of scar tissues, whether old or new, closely simulates the structure of a cable. Bundles of collagen fibres, the main component of scar tissue, that run at right angles to the direction of the cleavage lines, may be likened to a cable core while fibres that surround the main structure of the scar tissue, parallel with the direction of the cleavage lines, may be likened to the coating material of a cable.

Adolescent↗