Gray S D, McDonagh P F, Gore R W
Pflugers Arch. 1983 May;397(3):209-13. doi: 10.1007/BF00584359.
The anterior latissimus dorsi (ALD) and posterior latissimus dorsi (PLD) of the domestic chicken were used to study the possible differences in functional capillary density of slow and fast skeletal muscle. Frozen sections of each muscle were prepared for histochemical determination of fiber homogeneity, capillary/fiber ratios, and capillary densities. The functional capillary bed (percent open capillaries) was determined by comparing the number of ink-filled capillaries, after a systemic injection of india ink (for 90-120 s), with the total number of capillaries/mm2. ALD is a slow-tonic muscle consisting of two fiber types, with an average of 1.34 +/- 0.03 capillaries/fiber, a density of 699 +/- 20 capillaries/mm2, and a functional capillary bed representing 29% (ratio of open to total number of capillaries/mm2 was 0.286 +/- 0.022) of the total bed. PLD is a fast-twitch muscle also having two fiber types, with an average of 1.08 +/- 0.04 capillaries/fiber, a density of 561 +/- 26 capillaries/mm2, and a functional bed representing 11% (ratio of open capillaries to total is 0.111 +/- 0.014) of the total. These findings of increased capillarity (24% more capillaries/fiber and 25% more capillaries/mm2) and higher functional capillary density in an avian pure slow muscle (ALD), corroborate previous findings of increased capillarity around slow fibers in mixed muscles of several mammalian species. The values given represent the means +/- SEM.
利用家鸡的前背阔肌（ALD）和后背阔肌（PLD）研究慢、快骨骼肌功能毛细血管密度的可能差异。制备每块肌肉的冰冻切片，用于组织化学测定纤维同质性、毛细血管/纤维比率和毛细血管密度。通过比较全身注射印度墨汁（90 - 120秒）后充满墨汁的毛细血管数量与每平方毫米毛细血管总数，来确定功能性毛细血管床（开放毛细血管百分比）。ALD是一种慢张力肌，由两种纤维类型组成，平均每根纤维有1.34±0.03根毛细血管，密度为699±20根毛细血管/平方毫米，功能性毛细血管床占总床的29%（每平方毫米开放毛细血管与毛细血管总数的比率为0.286±0.022）。PLD是一种快肌，也有两种纤维类型，平均每根纤维有1.08±0.04根毛细血管，密度为561±26根毛细血管/平方毫米，功能性床占总数的11%（开放毛细血管与总数的比率为0.111±0.014）。在禽类纯慢肌（ALD）中毛细血管增多（每根纤维多24%的毛细血管，每平方毫米多25%的毛细血管）和功能性毛细血管密度更高的这些发现，证实了之前在几种哺乳动物混合肌中慢纤维周围毛细血管增多的发现。给出的值代表平均值±标准误。
