Wisconsin Esthetics State Board Practice Test

What constitutes an infection in the body?

1. The replication of healthy cells

2. The growth of a non-parasitic organism

3. The growth of a parasitic organism within the body

4. The increase in white blood cell count

The correct answer is: The growth of a parasitic organism within the body

An infection is defined as the invasion and multiplication of pathogenic organisms, such as bacteria, viruses, fungi, or parasites, within the body. This process often leads to tissue damage and the body's immune response. In this context, the growth of a parasitic organism is a prime example of an infection. A parasitic organism derives benefit at the expense of the host, leading to various symptoms and potentially severe health issues. The other options do not correctly define an infection: the replication of healthy cells pertains to normal bodily functions such as healing or tissue regeneration; the growth of a non-parasitic organism does not typically result in an infection; and while an increase in white blood cell count can be indicative of an infection, it is not itself an infection but rather a response by the body to combat pathogens. Understanding these definitions is crucial for recognizing how infections manifest and can affect overall health.