Which body system is primarily responsible for protection against disease?

Which body system is primarily responsible for protection against disease?

• A. Excretory
• B. immune
• C. Digestive
• D. Muscular

Answer: (B)

The immune system is primarily responsible for protection against disease. It serves as the body’s defense mechanism, identifying and targeting pathogens such as bacteria, viruses, fungi, and parasites. The immune system comprises various cells, tissues, and organs, including white blood cells, the lymphatic system, and the spleen, all of which work collaboratively to detect and neutralize harmful invaders. When the body encounters a pathogen, the immune system initiates a response involving the activation of immune cells that recognize specific antigens. These cells include T-cells and B-cells, which can produce antibodies to target and eliminate the pathogens effectively. Furthermore, the immune system has a memory component, allowing it to respond more rapidly and effectively to subsequent infections by the same pathogen. In contrast, the other body systems mentioned have different primary functions. The excretory system primarily eliminates waste products from the body, the digestive system focuses on the breakdown and absorption of nutrients, and the muscular system is responsible for movement and maintaining posture. While these systems may play indirect roles in the overall health and function of the body, they are not primarily tasked with the protection against disease.

The immune system is primarily responsible for protection against disease. It serves as the body’s defense mechanism, identifying and targeting pathogens such as bacteria, viruses, fungi, and parasites. The immune system comprises various cells, tissues, and organs, including white blood cells, the lymphatic system, and the spleen, all of which work collaboratively to detect and neutralize harmful invaders.

When the body encounters a pathogen, the immune system initiates a response involving the activation of immune cells that recognize specific antigens. These cells include T-cells and B-cells, which can produce antibodies to target and eliminate the pathogens effectively. Furthermore, the immune system has a memory component, allowing it to respond more rapidly and effectively to subsequent infections by the same pathogen.

In contrast, the other body systems mentioned have different primary functions. The excretory system primarily eliminates waste products from the body, the digestive system focuses on the breakdown and absorption of nutrients, and the muscular system is responsible for movement and maintaining posture. While these systems may play indirect roles in the overall health and function of the body, they are not primarily tasked with the protection against disease.