A study of the smaller blood vessels has been carried out on 170 human pituitary bodies by means of red cell staining methods. It was found that the vascular pattern of the neural lobe undergoes alteration with advancing years, the changes being common to both the sexes.
In infancy and in childhood, a simple pattern of branching vessels is seen throughout the neural lobe.
In the adolescent, a change from one type of vascular pattern to another becomes apparent: first, the individual vessels become tortuous and, subsequently, the tortuous vessels tend to become arranged in groups.
In the adult, the pattern becomes increasingly complex, and tortuous vessels of large calibre are seen grouped in lobular units.
In old age, the degree of vascularity of the tissue is much reduced and the pattern of the blood vessels tends to revert gradually to the simple arrangement seen in childhood.
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Online ISSN: 1479-6805
Print ISSN: 0022-0795
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