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  • 1
    Electronic Resource
    Electronic Resource
    Fine structure of the carotid body of normal and anoxic catsThis work was supported in part by grants HE 06958 and NB 07472 from the National Institutes of Health, U.S. Public Health Service. (1968)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 160 (1968), S. 697-717 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Certain modifications and clarifications of current concepts of the fine structure of the carotid body are described. The two principal cell types are here designated “enclosing” and “enclosed” to emphasize the enveloping nature of the former. The enclosed cells have numerous processes, contain lysosome-like bodies which are sometimes related to crystals with a period of about 100Å. In addition to the typical dark-cored vesicles, a few with lighter content are always present. The enclosing cells are in most respects similar in their contents to the enclosed, even to the presence of occasional dark-cored vesicles. The fenestrations of the blood vessels apparently are closed by thin diaphragms.In addition to the type of nerve endings previously described, there is a second type which extensively surrounds the enclosed cells, in the manner of a basket, and differs from the first type in having relatively empty cytoplasm with few synaptic vesicles or mitochondria. It is postulated that this is the afferent ending, while the former may be efferent.Severe anoxia rendered both cell types more dense than normal. In contrast to previous reports, the dark-cored vesicles of the enclosed cells did not disappear but rather increased in relative number, and their mitochondria were less opaque. No comparable changes were noted in control anoxic tissues of liver, kidney or adrenal medulla. The possibility is discussed that the enclosing cell has more than a simple supportive function, as the usual name “sustentacular” seems to imply.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091600405
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  • 2
    Electronic Resource
    Electronic Resource
    Venous distribution of superficial cervical region in rhesus (Macaca mulatta) monkey (1986)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 216 (1986), S. 82-84 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The superficial veins of the cervical region in over 50 Macaca mulatta monkeys were studied. We found, in addition to the external jugular vein, another major vein, which we have termed jugular accessory. It is comparable in size and runs ventral to the external jugular vein. It commenced at the angle of the mouth, ran in a groove on the dorsal aspect of the submandibular gland, and descended on the surface of the sternocleidomastoid muscle where it was connected to the external jugular vein by a short transverse twig. It then descended toward the clavicle, crossed it ventrally, and immediately joined the cephalic vein. The resultant common vein pierced the thoracic wall between the clavicle and first rib and joined the external jugular and axillary veins, producing the subclavian vein. It was the jugular accessory and the external jugular, being connected as described, that formed an “H”-shaped system.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1092160114
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  • 3
    Electronic Resource
    Electronic Resource
    Ultrastructural and histochemical study of the adrenal medulla in normal and cold-stressed syrian hamsters (1975)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 181 (1975), S. 113-129 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The effect of 24 and 48 hours' cold stress on the hamsters' adrenomedullary follicles and on the medullary ATPase activity was studied by light and electron microscopy. Only norepinephrine cells were depleted after this stress, and exocytosis seemed to be the mechanism involved in the release of catecholamine. Follicles containing these cells expanded and their lumina became narrow. A few other cellular and follicular changes also occurred and are described.ATPase activity was apparent in control organs along the endothelial linings, in neural elements and macrophages, and in approximately 40% of the linings of follicular lumina. Cold stress did not alter this pattern.These results have been compared with previous findings and the possible functions of the follicular lumina are discussed. It is concluded that they are unlikely sites for catecholamine storage or release.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091810109
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  • 4
    Electronic Resource
    Electronic Resource
    Light and electron microscopy of the adrenal medulla of macaca mulata monkeyThis work was supported in part by a grant from the Vermont Heart Association. (1969)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 164 (1969), S. 317-332 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: The fine structure of the adrenal medulla of Macaca mulata monkey was studied after double fixation with paraformaldehyde and OsO4; other fixations were employed for comparison. Only one cell type was seen. The cytoplasm contained an uneven distribution of chromaffin vesicles which were either spherical or elongated and 0.1-0.3 μ in diameter. There were two principle vesicle categories: dark and compact forms which comprised the majority (about 80%) and lighter, mostly larger, vesicles with a finely granulated appearance. The Golgi apparatus was often seen in relatively clear areas where few other organelles were present. Vesicles, 0.1-0.2 μ in diameter, which stained heterogeneously were also observed. They were few in number and always associated with the Golgi apparatus. The chromaffin cells lay in close proximity, but in no specific relationship, to thin-walled blood vessels. Nerve endings which were partially embraced by Schwann cells were in synaptic relation to the chromaffin cells.These findings are compared with previous observations in other mammals and the nature of the dark and light vesicles is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091640307
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  • 5
    Electronic Resource
    Electronic Resource
    Follicular arrangements in hamster adrenomedullary cells: Light and electron microscopic studyThis work was supported by a generous gift from the Given Foundation. (1970)
    New York, NY [u.a.] : Wiley-Blackwell
    The @Anatomical Record 168 (1970), S. 161-177 
    Details
    ISSN: 0003-276X
    Keywords: Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine
    Notes: Light and electron microscopic studies of the adrenal medulla of golden hamsters (Mesocricetus auratus) indicates that the chromaffin cells are arranged in hitherto undescribed irregular follicles surrounded by thin-walled blood vessels. Each follicle is generally one cell thick with a lumen of variable size and shape, which contains finely granulated materials, nerve endings and chromaffin cell processes. Chromaffin cells are polarized; basal regions, containing the nuclei, about on the follicular cavity, and the apical areas are in close proximity to blood vessels. In the central portion of the organ, follicles contain only adrenaline cells while at the periphery “mixed follicles” occur which have both adrenaline and noradrenaline cell types. Occasional follicles with only noradrenaline cells are found in this area also. These findings have been compared with previous observations. The possible function of the follicular cavities has been discussed briefly.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ar.1091680203
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