Question

When the heart contracts, called ______, blood pressure increases; when the heart relaxes, called ______, blood pressure decreases.pulmonary; systemic?

Answer 1

When the heart contracts, called systole, blood pressure increases. When the heart relaxes, called diastole, blood pressure decreases. Systole phase or contraction is started by the electrical cells of the sinoatrial node. The diastole phase is the period when the heart relaxes after contraction.