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Figure 7: Morphological evaluation in the heart of rats exposed to noise. (a) (×100): Control group. (b) (×100): Animal exposed to 70 dB(A) showed inflamed area of pericardium and dilated veins. (c) (×100) and (d) (×40): Animals exposed to 85 dB(A) showed a lot of dilated veins in the periphery of pericardium

Figure 7: Morphological evaluation in the heart of rats exposed to noise. (a) (×100): Control group. (b) (×100): Animal exposed to 70 dB(A) showed inflamed area of pericardium and dilated veins. (c) (×100) and (d) (×40): Animals exposed to 85 dB(A) showed a lot of dilated veins in the periphery of pericardium