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Homeostasis and Body System Interactions
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Grade 7
7.19 Homeostasis and Body System Interactions
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During an allergic reaction in the airways, the body produces extra mucus and the airway lining swells. Which explanation best shows how two body systems interact in this response?
A
The immune system reacts to the allergen, and the respiratory system is affected because the reaction changes the air passages.
B
The digestive system causes the swelling, and the endocrine system stores the mucus in the stomach.
C
The skeletal system detects the allergen, and the urinary system sends it to the lungs as mucus.
D
The circulatory system alone creates the reaction because the lungs are not involved.
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