Fig. 7.

Arterial ring under intravascular pressure waves (see Fig 6) with different models: a proposed model; b proposed model without calcium-independent contraction mechanism ($k_{2/5}$ is constant); c proposed model without stretch-dependencies of the chemical model ($k_{2/5}$ and $k_{1/6}$ is constant). After an increase of the pressure from 120/80 mmHg to 180/120 mmHg, the application of the proposed model leads to a decrease of the arterial diameter (see a between 3100 and 3400 s) which is significantly visible for the diastolic blood pressure. The reduced models in b and c cannot achieve this contractile behavior