MICROVASCULAR DIMENSIONS AND BLOOD-FLOW IN SKELETAL-MUSCLE
MICROVASCULAR DIMENSIONS AND BLOOD-FLOW IN SKELETAL-MUSCLE
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DOI：
10.1111/j.1748-1716.1972.tb05327.x
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发表时间：
1972-01-01
期刊：
影响因子：
--
通讯作者：
MYRHAGE, R
中科院分区：
文献类型：
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作者：
ERIKSSON, E;MYRHAGE, R
在用氯醛糖麻醉的猫中，在活体显微镜下测量细腱肌中不同血管段的长度和直径。记录流动特征，包括红细胞速度。对固定和染色的肌肉标本进行组织学分析，并根据 Spalteholz 的方法处理印度墨水灌注的肌肉。平均肌纤维直径为44μm。 62% 的肌纤维为红色（48% B 纤维，直径 41 μm，14% C 纤维，直径 26 μm），其余 38% 为白色（A 纤维，直径 55 μm）。平均肌肉纤维被 3.6 个毛细血管包围。毛细管长 1015 ± 16.3 (S.E.) μm，内径 5.3 ± 0.0(3) (S.E.) μm。计算出的毛细血管表面积为 0.9 m2/100 cm3 肌肉组织。发现毛细血管中的平均红细胞速度为 0.5 mm/s，但随时间和不同毛细血管之间存在很大差异。既没有观察到微血管内径的“自发”变化，也没有观察到明显的毛细血管前括约肌活动。肌肉组织内的动静脉吻合是罕见的例外。
In cats anesthetized with chloralose the lengths and diameters of the different vascular segments in the tenuissimus muscle were measured in the vital microscope. The flow characteristics, including red cell velocity, were registered. Fixed and stained muscle specimens were analyzed histologically as well as Indian ink‐perfused muscles treated according to the method of Spalteholz. The average muscle fibre diameter was 44 μm. 62% of the muscle fibres were red (48% B‐fibres, diameter 41 μm and 14% C‐fibres, diameter 26 μm) and the remaining 38% were white (A‐fibres, diameter 55 μm). The average muscle fibre was surrounded by 3.6 capillaries. The capillaries were 1015 ± 16.3 (S.E.) μm long and 5.3 ± 0.0(3) (S.E.) μm in internal diameter. The calculated capillary surface area was 0.9 m2/100 cm3of muscle tissue. Average red cell velocity in the capillaries was found to be 0.5 mm/s, but there was a wide variation with time and between different capillaries. Neither “spontaneous” changes in internal diameters of the microvessels nor a distinct precapillary sphincter activity could be observed. Arterio‐venous anastomoses within the muscle tissue were rare exceptions.