Inadequate delivery of oxygen to the cells is called?

• A. Hypoxia
• B. Oxygenation
• C. Ventilation
• D. Perfusion

Answer: (A)

Oxygen delivery to tissues hinges on the amount of oxygen carried by the blood and the blood flow reaching those tissues. When cells aren’t getting enough oxygen to meet their metabolic needs, the situation is called hypoxia. This term specifically describes a tissue-level oxygen deficiency, which can arise from low arterial oxygen content (hypoxemia), reduced blood flow to tissues (poor perfusion), or problems with the body's ability to use oxygen.

Oxygenation refers to how well the blood is loaded with oxygen in the lungs, and ventilation is the act of moving air in and out of the lungs. Perfusion is about the flow of blood through tissues. While inadequate perfusion or poor oxygenation can lead to hypoxia, the term that best names the state of insufficient oxygen reaching the cells is hypoxia.