Does ageing affect the amount of muscle, fat, and collagen in the human sinoatrial node and internodal tracts?
The study demonstrates a significant age-related decline in muscle content within the human sinoatrial node and internodal tracts, which may contribute to age-related electrophysiological changes.
Quantitative analysis of the amount of muscle,fat, and collagen in the human sinoatrial node and internodal tracts has been carried out. Subjects under 50 were compared with those over 75 years of age at death. In old age there is a significant fall in the amount of muscle present in the sinoatrial node and internodal tracts.
Davies et al. (Tue,) studied this question.
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