Multiple Choice
Antibodies that attack the body's own tissues are called what?
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21. The Immune System
Introduction to the Immune System
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Which of the following is a primary function of the circulatory system?
A
Producing hormones for growth
B
Transporting oxygen and nutrients to cells
C
Breaking down food into nutrients
D
Filtering waste from the blood
Verified step by step guidance1
Identify the main components of the circulatory system: the heart, blood, and blood vessels.
Understand the primary role of the circulatory system, which is to transport substances throughout the body.
Recognize that the circulatory system is responsible for delivering oxygen and nutrients to cells, which is essential for cellular function and survival.
Differentiate the circulatory system's function from other systems: hormone production is primarily the endocrine system's role, digestion is the digestive system's role, and waste filtration is the urinary system's role.
Conclude that the primary function of the circulatory system is to transport oxygen and nutrients to cells, supporting their metabolic needs.
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