Which two systems play a critical role in responding to infections in the body?

• A. Respiratory and Immune
• B. Digestive and Circulatory
• C. Immune and Endocrine
• D. Skeletal and Nervous

Answer: (C)

When considering the body systems critical in responding to infections, the immune system is paramount. Its primary function is to identify and eliminate pathogens such as bacteria and viruses that invade the body. The immune system is composed of various components, including white blood cells, antibodies, and lymphatic tissues, all working together to detect and neutralize these threats.

The endocrine system also plays a significant role in the response to infection. It releases hormones that can influence various physiological responses, including those related to stress and inflammation. For instance, cortisol, produced by the adrenal glands, can regulate immune responses and help manage the body’s reaction to infection.

Therefore, the combination of the immune and endocrine systems is vital in orchestrating an effective response to infections, enabling the body to react appropriately to pathogens and maintain homeostasis.