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Multiple Choice
Which of the following body systems protects the body from the external environment?
A
Respiratory system
B
Circulatory system
C
Digestive system
D
Integumentary system
Verified step by step guidance
1
Identify the primary function of each body system listed in the options.
Understand that the respiratory system is primarily responsible for gas exchange, bringing oxygen into the body and removing carbon dioxide.
Recognize that the circulatory system is responsible for transporting nutrients, gases, and wastes throughout the body.
Acknowledge that the digestive system is involved in breaking down food and absorbing nutrients.
Learn that the integumentary system, which includes the skin, hair, and nails, serves as the body's first line of defense against external environmental factors, providing protection and helping to regulate body temperature.