13. The system that enables oxygen and nutrients to be distributed throughout the body and blood to be returned to the heart and lungs for replenishment is called the:
(A)cardiovascular system
(B)pulmonary and systemic circulation
(C) digestive system
(D) respiratory system

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統計： A(223), B(163), C(84), D(61), E(0) #3240623

詳解 (共 2 筆)

#6113319
循環系統（英語：circulatory ...
(共 204 字，隱藏中）
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#6110520
將氧氣和營養分配到全身，並將血液返回心臟和肺部以補充的系統稱為：
(A) 心血管系統cardiovascular system 
(B) 肺循環和體循環pulmonary and systemic circulation 
(C) 消化系統digestive system 
(D) 呼吸系統respiratory system
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