scholarly journals Arterial Network Geometric Characteristics and Regulation of Capillary Blood Flow in Hamster Skeletal Muscle Microcirculation

2019 ◽  
Vol 9 ◽  
Author(s):  
Dominga Lapi ◽  
Martina Di Maro ◽  
Teresa Mastantuono ◽  
Noemy Starita ◽  
Mauro Ursino ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
Capillary Blood ◽  
Capillary Blood Flow ◽  
Geometric Characteristics ◽  
Arterial Network ◽  
Skeletal Muscle Microcirculation

Hypoxia- or hyperoxia-induced changes in arteriolar vasomotion in skeletal muscle microcirculation

1991 ◽  
Vol 260 (2) ◽  
pp. H362-H372 ◽  
Author(s):  
S. Bertuglia ◽  
A. Colantuoni ◽  
G. Coppini ◽  
M. Intaglietta
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
High Frequency ◽  
Capillary Blood ◽  
Capillary Blood Flow ◽  
Gas Mixture ◽  
Reduced Frequency ◽  
Different Types ◽  
Skeletal Muscle Microcirculation ◽  
Induced Changes

Arteriolar vasomotion was characterized in the skin muscle of the unanesthetized hamster skinfold window preparation and related to the specific arterioles that give rise to the different types of activity. The arterioles were classified according to the Strahler method: order 0 was assigned to capillaries and order 4 to the largest arterioles. The arterioles showed vasomotion with a specific range of frequencies that varied according to the vessel order; the highest fundamental frequency (9.1 +/- 3.9 cycles/min) was detected in the smallest order 1 arterioles and the lowest frequency (2.1 +/- 0.9 cycles/min) in order 4 vessels. Hypoxia (8, 11, and 15% O2 gas mixture inspiration) increased the frequency of vasomotion, decreased mean and effective diameters, and reduced capillary blood flow. The effects were more pronounced with an 8 and 11% O2 gas mixture. Hypoxia caused high-frequency vasomotion to shift from order 1 and 2 arterioles to the beginning of order 3 arterioles, which in this condition dominated the daughter vessels and generated the prominent activity (24 +/- 4 cycles/min, 11% O2 gas mixture). Hypertoxia (100% O2) induced differentiated arteriolar responses. The smallest vessels showed prolonged constriction, decreased mean and effective diameters, and reduced frequency of vasomotion. Capillary blood flow was restricted. Order 3 vessels did not constrict or dilate.

scholarly journals Quantitative capillary blood flow spatial analysis in skeletal muscle during sepsis

2018 ◽  
Vol 32 (S1) ◽  
Author(s):  
Nicholas A. Mignemi ◽  
Kameron V. Kilchrist ◽  
Mason A. McClatchey ◽  
Ian Miller Williams ◽  
Craig L. Duvall ◽  
...  
Keyword(s):  
Skeletal Muscle ◽  
Blood Flow ◽  
Spatial Analysis ◽  
Capillary Blood ◽  
Capillary Blood Flow
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