Final answer:
Shock is best defined as cardiovascular collapse leading to inadequate perfusion, causing a failure to supply sufficient blood and nutrients needed for cellular metabolism. The Correct Answer is Option. B.
Step-by-step explanation:
The term "shock" is MOST accurately defined as: cardiovascular collapse leading to inadequate perfusion. Circulatory shock, also simply called shock, is a life-threatening medical condition where the circulatory system fails to supply enough blood flow to provide adequate oxygen and nutrients to the tissues, necessary to maintain cellular metabolism.
Among the recognized forms of shock are hypovolemic shock, caused by excessive loss of blood volume, and cardiogenic shock, resulting from the inability of the heart to maintain cardiac output. Furthermore, vascular shock can result from a loss of vascular muscle tone, leading to vasodilation, and obstructive shock occurs when there's a blockage in the vascular system.