50. Which process does the body use to protect itself from disease?
Answer: C
Phagocytosis is the process the body uses to protect itself from disease.
Phagocytosis is a crucial immune response where cells, known as phagocytes, engulf and digest pathogens and foreign particles, thereby protecting the body from disease.
A) Tachycardia
Tachycardia refers to an increased heart rate, which is often a response to stress or illness but does not directly contribute to the immune defense against pathogens. It is a physiological response rather than a protective process.
B) Hypoxemia
Hypoxemia is a condition characterized by low levels of oxygen in the blood. While it can indicate underlying health issues or disease, it does not serve as a protective mechanism against diseases and can actually compromise the body’s ability to fight infections.
C) Phagocytosis
Phagocytosis is the correct answer as it involves the active engulfing of pathogens by immune cells, effectively eliminating bacteria and viruses from the body. This process is essential for maintaining health and preventing infections.
D) Syncope
Syncope, or fainting, is a temporary loss of consciousness often due to reduced blood flow to the brain. It is not a protective mechanism against disease; rather, it can be a symptom of an underlying health issue.
Conclusion
Phagocytosis is the definitive answer as it directly relates to the body's immune defense against diseases through the action of phagocytes. In contrast, the other options either describe physiological responses that do not protect against disease or indicate health conditions that may hinder the immune response.