Which factor is environmental and affects hypoxia?

Which factor is environmental and affects hypoxia?

• A. Environmental Temperature
• B. Individual Tolerance
• C. Medical Conditions
• D. Alcohol/Smoking

Answer: (A)

Environmental temperature influences the body's oxygen balance by changing how hard the body has to work and how blood flows. In cold surroundings, shivering and vasoconstriction boost oxygen use and reduce peripheral blood flow, which can make tissues reach hypoxia if oxygen delivery can't keep up. In hot environments, dehydration and cardiovascular strain can also impair oxygen transport. Since temperature is an external condition, it’s the environmental factor affecting hypoxia. The other options describe internal or personal factors (how someone tolerates stress, existing medical issues, or substances like alcohol and smoking) rather than something in the surrounding environment.

Environmental temperature influences the body's oxygen balance by changing how hard the body has to work and how blood flows. In cold surroundings, shivering and vasoconstriction boost oxygen use and reduce peripheral blood flow, which can make tissues reach hypoxia if oxygen delivery can't keep up. In hot environments, dehydration and cardiovascular strain can also impair oxygen transport. Since temperature is an external condition, it’s the environmental factor affecting hypoxia. The other options describe internal or personal factors (how someone tolerates stress, existing medical issues, or substances like alcohol and smoking) rather than something in the surrounding environment.