Cardiac muscle fiber — Free Physiology Illustration | GPAI | GPAI

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Cardiac muscle fiber — Free Physiology Illustration | GPAI | GPAI

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Cardiac muscle fiber

Cardiac muscle fiber

Physiology

Cardiac muscle fiber

Single cardiac muscle fiber (cardiomyocyte) shown as a short to moderately elongated cylindrical cell in pink to reddish-pink tones, with a slightly branched or subtly Y-shaped profile and short branching ends. The fiber has visible faint to clear transverse striations, one centrally placed oval nucleus or occasionally two central oval nuclei, and distinct dark intercalated disc bands or stepped junction lines crossing the fiber at intervals. The membrane is smooth and clearly outlined, with the overall appearance characteristic of heart muscle.

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