Florida Basic Recruit Training Program High Liability (First Aid) Practice Exam

What is the main function of the skin in the human body?

1. Regulate body temperature

2. Protect against bacteria and harmful organisms

3. Facilitate nutrient absorption

4. Support skeletal structure

The correct answer is: Protect against bacteria and harmful organisms

The primary function of the skin is indeed to protect against bacteria and harmful organisms. This protective role is crucial as the skin acts as a barrier that prevents pathogens, such as bacteria and viruses, from entering the body and causing infections. The outermost layer of the skin, known as the epidermis, contains specialized cells that produce keratin and other substances which enhance this barrier function. Additionally, the skin produces oils and sweat that help to maintain its integrity and keep harmful microorganisms at bay. While the skin also plays important roles in regulating body temperature through processes such as sweating and blood flow regulation, the fundamental protective function highlights its role as the first line of defense in the immune system. It is vital for maintaining overall health and preventing disease, thereby emphasizing the significance of the skin in protecting the body from external threats.