Learning Path
Question & Answer1
Understand Question2
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Explore TopicChoose the Best Answer
A
It provides a physical barrier to block pathogens.
B
It produces antibodies to fight infections.
C
It actively destroys pathogens once they enter the body.
D
It helps in the digestion of pathogens.
Understanding the Answer
Let's break down why this is correct
Answer
The integumentary system, made up of skin, hair, and nails, forms a tight, outer shield that stops most germs from slipping into the body. Its cells secrete antimicrobial peptides and keep the surface slightly acidic, which kills or slows microbes. When the skin is damaged, immune cells in the layer immediately react, releasing signals that bring in more defenders. For instance, a small cut lets bacteria in, but the skin’s layers and resident immune cells quickly seal the wound and destroy the invaders. Because it is the first barrier the body encounters, the integumentary system is essential for preventing infections before they spread.
Detailed Explanation
The skin is the first layer the body meets; it forms a solid wall that stops germs from getting inside. Other options are incorrect because Antibodies are made by special immune cells, not by the skin; The skin does not eat or kill germs once they are inside.
Key Concepts
Integumentary System
Innate Immune Response
Pathogen Defense Mechanisms
Topic
Innate Immune Defenses
Difficulty
easy level question
Cognitive Level
understand
Practice Similar Questions
Test your understanding with related questions
1
Question 1What is the primary reason that the integumentary system, including skin and hair, is considered the first line of defense against pathogens?
easyBiological-sciences
Practice
2
Question 2Which of the following examples best illustrates the function of the integumentary system as an innate immune defense?
mediumBiological-sciences
Practice
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