Introduction.

In cardiovascular pathologies such as heart failure, arterial hypertension, vasculopathies, coronary diseases, etc; the renin-angiotensin system (RAS) has an essential role. The main actions include the regulation of blood pressure, vascular tone, volemia and facilitating sympathetic transmission.

Objective.

This manuscript summarizes these aspects of the SRA and discussed the sequence of transformations of different proteins, beginning with the action of renin that transforms the angiotensinogen into angiotensin-I and later, it is converted into angiotensin II by the action of the Angiotensin-I converting enzyme (ACE-I).

Conclusions.

When this system is altered culminates in hypertension, which can be controlled by pharmacological treatments using chemical inhibitors whose action mechanisms are based on preventing these enzymes from binding to their substrate and thus maintain a homeostatic balance in the pressure arterial.

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