| 词条 | Isotropic bands |
| 释义 | In physiology, isotropic bands (better known as I bands) are the lighter bands of skeletal muscle cells (a.k.a. muscle fibers). Isotropic bands contain only actin-containing thin filaments.[1] The darker bands are called anisotropic bands (A bands). Together the I-bands and A-bands contribute to the striated appearance of skeletal muscle. Isotropic bands indicate the behavior of polarized light as it passes through I bands. These are with low refractive index and they are isotropic to polarized light.{{cn|date=March 2019}} {{DEFAULTSORT:Isotropic Bands}}{{cell-biology-stub}} 1 : Muscular system |
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