SciencePregunta 59 de 120
Which organ system is primarily responsible for transporting oxygen and nutrients throughout the body?
a.Digestive system
b.Circulatory system
c.Skeletal system
d.Integumentary system
Explicación
The circulatory (cardiovascular) system uses the heart, blood, and vessels to transport oxygen, nutrients, and waste throughout the body. The digestive system breaks down food, and the skeletal system provides structure.
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