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→Physiology
==Physiology==
==Physiology==
The [[Vascular Development - Anatomy & Physiology|development of the vascular system]] occurs following three distinct processes:
*Vasculogenesis: the formation of blood vessels during the third week of gestation in domestic mammals, initially in the yolk sac and afterwards in the allantois from endothelial progenitor cells.
*Angiogenesis: the sprouting of new capillaries from pre-existing vessels.
*Arteriogenesis: the remodelling of newly formed or pre-existing vascular channels into larger and more muscular arterioles.
In the adult animal, the physiology of blood vessels is predominantly associated with the maintenance of [[Control of Blood Pressure & Blood Flow - Anatomy & Physiology|blood pressure and blood flow]]. Arterial blood pressure is created by the combined forces and complex interactions of cardiac output, systemic vascular resistance (resistance produced mainly in the arterioles), and viscosity of the blood. In summary, Blood Pressure (BP) = Cardiac Output (CO) x Systemic Vascular Resistance (SVR).
==Response to Injury==
==Response to Injury==