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  • American Physiological Society  (8)
  • 1960-1964  (8)
  • Medicine  (8)
Material
Publisher
  • American Physiological Society  (8)
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Language
Years
  • 1960-1964  (8)
Year
Subjects(RVK)
RVK
  • 1
    Online Resource
    Online Resource
    Single proximal tubules of Necturus kidney. VI: Nature of potassium transport
    American Physiological Society ; 1963
    In:  American Journal of Physiology-Legacy Content Vol. 204, No. 3 ( 1963-03-01), p. 377-380
    Details
    In: American Journal of Physiology-Legacy Content, American Physiological Society, Vol. 204, No. 3 ( 1963-03-01), p. 377-380
    Abstract: K concentration and apparent unidirectional K fluxes have been measured in Necturus kidney proximal tubule. Mean tubular K in 12 collections from the most distal segment of the tubule is 5.4 ± 0.3 mm, and the tubular K to serum K ratio in these experiments is 1.6 ± 0.1, not significantly different from the inulin concentration ratio, 1.4 ± 0.2. The glomerular fluid to serum K concentration ratio is 1.01 ± 0.03. Apparent unidirectional K fluxes were measured using stopped-flow microperfusion technique in 11 experiments with perfusion fluid containing about 7 mm K. The apparent mean K influx was 52 ± 6 pmoles/cm 2 sec and the apparent efflux was 49 ± 3 pmoles/ cm 2 sec.
    Type of Medium: Online Resource
    ISSN: 0002-9513
    URL: Article
    DOI: 10.1152/ajplegacy.1963.204.3.377
    RVK:
    WA 15000
    RVK:
    XA 20060
    Language: English
    Publisher: American Physiological Society
    Publication Date: 1963
    detail.hit.zdb_id: 1477334-X
    detail.hit.zdb_id: 2065807-2
    detail.hit.zdb_id: 1477287-5
    detail.hit.zdb_id: 1477308-9
    detail.hit.zdb_id: 1477297-8
    detail.hit.zdb_id: 1477331-4
    detail.hit.zdb_id: 1477300-4
    detail.hit.zdb_id: 1477329-6
    SSG: 12
    Location Call Number Limitation Availability
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    Online Resource
  • 2
    Online Resource
    Online Resource
    Nature of sleep in young infants
    American Physiological Society ; 1962
    In:  Journal of Applied Physiology Vol. 17, No. 3 ( 1962-05-01), p. 543-546
    Details
    In: Journal of Applied Physiology, American Physiological Society, Vol. 17, No. 3 ( 1962-05-01), p. 543-546
    Abstract: Using criteria of ocular reactions, bodily activity, and respiration in 12 infants up to 6 months of age, four stages of the waking and the sleeping state have been distinguished: 1) deep sleep, as judged by closed eyes, virtual disappearance of bodily activity, regular respiration, and lowered frequency of breathing; 2) sleep with closed eyes, but greater bodily activity and irregularity of respiration; 3) light sleep, or the transitional state between sleep and waking as manifested by alternating open, closed, and half-open eyes, increased activity and frequency of breathing, and irregularity of respiration; 4) the waking state with open eyes, great bodily activity and respiratory frequency, and irregular respiration. This differentiation has enabled more accurate modification of the usually reported observations concerning the shortening of sleep in early life. It is not the duration of deep sleep which decreases, but rather the transitional state between sleep and waking. The waking state significantly lengthens with age. Note: (With the Technical Assistance of V. Lapáccaronková) Submitted on August 14, 1961
    Type of Medium: Online Resource
    ISSN: 8750-7587 , 1522-1601
    URL: Article
    DOI: 10.1152/jappl.1962.17.3.543
    RVK:
    WA 15000
    RVK:
    XA 52094
    Language: English
    Publisher: American Physiological Society
    Publication Date: 1962
    detail.hit.zdb_id: 1404365-8
    SSG: 12
    SSG: 31
    Location Call Number Limitation Availability
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    Online Resource
  • 3
    Online Resource
    Online Resource
    Humoral nature of hypoglycemia in muscular exercise
    American Physiological Society ; 1961
    In:  American Journal of Physiology-Legacy Content Vol. 200, No. 1 ( 1961-01-01), p. 67-70
    Details
    In: American Journal of Physiology-Legacy Content, American Physiological Society, Vol. 200, No. 1 ( 1961-01-01), p. 67-70
    Abstract: Muscular exercise leads to hypoglycemia. The ‘glucose transport theory’ of insulin action places cellular entry of glucose as the limiting step in its rate of metabolism at rest as well as under exercise. Activation of entry of appropriate sugars by exercise, as a primary event, leads to the augmented rates of glucose metabolism seen with contraction of muscles. The mechanism of hypoglycemia of exercise is shown to be humoral in character. Blood and lymphatic fluid of working dogs, both normal or diabetic, are shown to develop hypoglycemic properties during exercise which can be transferred to resting preparations. This hypoglycemic factor of muscle work is highly labile and appears to be quite distinct from insulin.
    Type of Medium: Online Resource
    ISSN: 0002-9513
    URL: Article
    DOI: 10.1152/ajplegacy.1961.200.1.67
    RVK:
    WA 15000
    RVK:
    XA 20060
    Language: English
    Publisher: American Physiological Society
    Publication Date: 1961
    detail.hit.zdb_id: 1477334-X
    detail.hit.zdb_id: 2065807-2
    detail.hit.zdb_id: 1477287-5
    detail.hit.zdb_id: 1477308-9
    detail.hit.zdb_id: 1477297-8
    detail.hit.zdb_id: 1477331-4
    detail.hit.zdb_id: 1477300-4
    detail.hit.zdb_id: 1477329-6
    SSG: 12
    Location Call Number Limitation Availability
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    Online Resource
  • 4
    Online Resource
    Online Resource
    Nature of "imperfect" elasticity of articular cartilage
    American Physiological Society ; 1963
    In:  Journal of Applied Physiology Vol. 18, No. 2 ( 1963-03-01), p. 393-396
    Details
    In: Journal of Applied Physiology, American Physiological Society, Vol. 18, No. 2 ( 1963-03-01), p. 393-396
    Abstract: A low friction apparatus for measuring the compression of articular cartilage during static loading and subsequent recovery under conditions of immersion is described. The instrument system employed a specially designed balance lever and sensing transducer that recorded load and displacements as a function of time. Unlike the findings of past experiments conducted in air, measurements made in Hanks' balanced salt solution disclosed restitution of the compressed cartilage, following removal of loads up to 82.5 gm/mm2, to its original thickness. The measurements were affected by the tonicity of the immersion medium. The so-called imperfect elasticity of articular cartilage previously reported in the literature thus is an artifact. Submitted on August 7, 1962
    Type of Medium: Online Resource
    ISSN: 8750-7587 , 1522-1601
    URL: Article
    DOI: 10.1152/jappl.1963.18.2.393
    RVK:
    WA 15000
    RVK:
    XA 52094
    Language: English
    Publisher: American Physiological Society
    Publication Date: 1963
    detail.hit.zdb_id: 1404365-8
    SSG: 12
    SSG: 31
    Location Call Number Limitation Availability
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    Online Resource
  • 5
    Online Resource
    Online Resource
    Nature of purines excreted in urine during muscular exercise
    American Physiological Society ; 1964
    In:  Journal of Applied Physiology Vol. 19, No. 2 ( 1964-03-01), p. 246-248
    Details
    In: Journal of Applied Physiology, American Physiological Society, Vol. 19, No. 2 ( 1964-03-01), p. 246-248
    Abstract: The purines which were previously noted to increase in the urine during muscular exercise have been identified as hypoxanthine and xanthine. Quantitative studies on 11 human subjects showed that the magnitude of the increase in excretion of hypoxanthine varied greatly and reached up to 20-fold in some cases. The increase in the excretion of xanthine was less pronounced with the maximum about threefold. xanthine and hypoxanthine excretion Submitted on August 8, 1963
    Type of Medium: Online Resource
    ISSN: 8750-7587 , 1522-1601
    URL: Article
    DOI: 10.1152/jappl.1964.19.2.246
    RVK:
    WA 15000
    RVK:
    XA 52094
    Language: English
    Publisher: American Physiological Society
    Publication Date: 1964
    detail.hit.zdb_id: 1404365-8
    SSG: 12
    SSG: 31
    Location Call Number Limitation Availability
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    Online Resource
  • 6
    Online Resource
    Online Resource
    Nonsyncytial nature of cardiac muscle: membrane resistance of single cells
    American Physiological Society ; 1960
    In:  American Journal of Physiology-Legacy Content Vol. 198, No. 3 ( 1960-03-01), p. 531-536
    Details
    In: American Journal of Physiology-Legacy Content, American Physiological Society, Vol. 198, No. 3 ( 1960-03-01), p. 531-536
    Abstract: Previous work suggested that the myocardium is not a functional syncytium. In the present study of isolated frog ventricle, constant-current pulses were used to estimate the d.c. resistance between two microelectrodes when: a) both were extracellular, b) one was intracellular, and c) both were intracellular. A resistance of 12.4 ± 0.5 megohms was obtained for single cells. This large resistance indicates that the cells are functionally small units. The resistance between two cells was about twice that of one cell and was independent of the distance between the cells. Hence there are no low resistance pathways between cells. The results support the hypothesis that conduction in the heart does not involve a functional syncytium; rather junctional transmission may occur from cell to cell. Myocardial cells which had been previously punctured generally showed a much lower resistance, even though the resting and action potentials were normal.
    Type of Medium: Online Resource
    ISSN: 0002-9513
    URL: Article
    DOI: 10.1152/ajplegacy.1960.198.3.531
    RVK:
    WA 15000
    RVK:
    XA 20060
    Language: English
    Publisher: American Physiological Society
    Publication Date: 1960
    detail.hit.zdb_id: 1477334-X
    detail.hit.zdb_id: 2065807-2
    detail.hit.zdb_id: 1477287-5
    detail.hit.zdb_id: 1477308-9
    detail.hit.zdb_id: 1477297-8
    detail.hit.zdb_id: 1477331-4
    detail.hit.zdb_id: 1477300-4
    detail.hit.zdb_id: 1477329-6
    SSG: 12
    Location Call Number Limitation Availability
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    Online Resource
  • 7
    Online Resource
    Online Resource
    Nature of electrolyte exchange in isolated uterine smooth muscle
    American Physiological Society ; 1963
    In:  American Journal of Physiology-Legacy Content Vol. 205, No. 4 ( 1963-10-01), p. 674-680
    Details
    In: American Journal of Physiology-Legacy Content, American Physiological Society, Vol. 205, No. 4 ( 1963-10-01), p. 674-680
    Abstract: Data are presented to show the marked changes in contents of water, sodium, potassium, and chloride in isolated rabbit myometrial strips when these preparations are incubated in Krebs-bicarbonate solution. The changes are interpreted to be composed of an initial passive redistribution and a later active transport phase. In support of this interpretation are: 1) in the passive redistribution phase, the intracellular ionic concentrations approached those in the medium, and 2) at 0 C, only passive redistribution was present, while at 25 and 37 C, restoration towards the normal ionic distribution, i.e., active transport, also occurred. Movement of water is largely isotonic and movement of chloride appears to be largely passive. Much potassium is actively accumulated in excess of the amount required by Donnan distribution. In contrast to the estrogen-dominated myometrium, the progesterone-dominated myometrium showed a lesser extent of passive redistribution and an earlier appearance of active transport phenomena. In both types of myometrium the net amounts of sodium extruded and potassium reaccumulated are balanced, as are the rates of the reciprocal net movements.
    Type of Medium: Online Resource
    ISSN: 0002-9513
    URL: Article
    DOI: 10.1152/ajplegacy.1963.205.4.674
    RVK:
    WA 15000
    RVK:
    XA 20060
    Language: English
    Publisher: American Physiological Society
    Publication Date: 1963
    detail.hit.zdb_id: 1477334-X
    detail.hit.zdb_id: 2065807-2
    detail.hit.zdb_id: 1477287-5
    detail.hit.zdb_id: 1477308-9
    detail.hit.zdb_id: 1477297-8
    detail.hit.zdb_id: 1477331-4
    detail.hit.zdb_id: 1477300-4
    detail.hit.zdb_id: 1477329-6
    SSG: 12
    Location Call Number Limitation Availability
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    Online Resource
  • 8
    Online Resource
    Online Resource
    AN ANALOGUE CROSS-CORRELATOR TO STUDY NATURALLY INDUCED ACTIVITY IN INTACT NERVE TRUNKS
    American Physiological Society ; 1963
    In:  Journal of Neurophysiology Vol. 26, No. 3 ( 1963-05-01), p. 432-448
    Details
    In: Journal of Neurophysiology, American Physiological Society, Vol. 26, No. 3 ( 1963-05-01), p. 432-448
    Type of Medium: Online Resource
    ISSN: 0022-3077 , 1522-1598
    URL: Article
    DOI: 10.1152/jn.1963.26.3.432
    RVK:
    XA 10000 ; XA 552555
    Language: English
    Publisher: American Physiological Society
    Publication Date: 1963
    detail.hit.zdb_id: 80161-6
    detail.hit.zdb_id: 1467889-5
    Location Call Number Limitation Availability
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