[The "non-actomyosin" component of vascular wall contraction].

The matrix of connective tissue was found to take part in generation of the mechanical strength in isolated strips of the v. cava posterior wall under the effect of increased temperature. The finding corroborates the concept of the actomyosin interaction. The vessel tissue response to temperature seems to be formed by three mechanisms, two of them being of a non-actomyosin nature.