TY - JOUR
T1 - Digital image analysis of shark gills
T2 - Modeling of oxygen transfer in the domain of time
AU - Bhargava, V.
AU - Lai, N. C.
AU - Graham, J. B.
AU - Hempleman, S. C.
AU - Shabetai, R.
PY - 1992
Y1 - 1992
N2 - Digital radiographic imaging of blood circulation through leopard shark gills establishes a secondary lamellar transit time of 6.5 s. This duration, combined with estimates of cardiac output and hemoglobin-oxygen affinity, permits novel modeling of gill oxygen transfer in the time domain. The temporal model allows assessment of factors contributing to previously noted discrepancies between physiological and morphometric branchial oxygen conductance estimates. Lamellar transit time for shark blood is 20 times greater than human alveolar transit time, and thus correlates with a slower rate of hemoglobin-oxygen binding and a greater diffusion distance.
AB - Digital radiographic imaging of blood circulation through leopard shark gills establishes a secondary lamellar transit time of 6.5 s. This duration, combined with estimates of cardiac output and hemoglobin-oxygen affinity, permits novel modeling of gill oxygen transfer in the time domain. The temporal model allows assessment of factors contributing to previously noted discrepancies between physiological and morphometric branchial oxygen conductance estimates. Lamellar transit time for shark blood is 20 times greater than human alveolar transit time, and thus correlates with a slower rate of hemoglobin-oxygen binding and a greater diffusion distance.
KW - gill conductance
KW - lamellar blood residence time
KW - specific blood conductance
UR - http://www.scopus.com/inward/record.url?scp=0026793869&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0026793869&partnerID=8YFLogxK
U2 - 10.1152/ajpregu.1992.263.4.r741
DO - 10.1152/ajpregu.1992.263.4.r741
M3 - Article
C2 - 1415783
AN - SCOPUS:0026793869
SN - 0363-6119
VL - 263
SP - R741-R746
JO - American Journal of Physiology - Regulatory Integrative and Comparative Physiology
JF - American Journal of Physiology - Regulatory Integrative and Comparative Physiology
IS - 4 32-4
ER -