Fibrillar

Advanced age, independent of concurrent cardiovascular disease, can be associated with increased extracellular matrix (ECM) fibrillar collagen content and abnormal diastolic function. However, the mechanisms causing this left ventricular (LV) remodeling remain incompletely defined. We ...

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It makes sense that they would be. Now you have me wondering if "asynchronous" is an alternative to "fibrillar," or whether the mysterious Powers-That-Be have switched terms and "fibrillar" is no longer accepted.

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... the system tends to be pumped by skeletal muscles, so exchange is efficient. You can watch a bee breathe. If the system weren't highly efficient, fibrillar muscle (the most energy/oxygen -consuming muscle there is) wouldn't work very well, and flies wouldn't fly. This may not be as true for the ...

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