noun🔗Share대정맥Either of the two large veins that take oxygen depleted blood, from the upper body and from the lower body, and return it to the right atrium of the heart."The doctor explained that the vena cava is a large vein that brings blood without oxygen back to the heart. "의사는 대정맥이 산소 없는 혈액을 심장으로 되돌리는 큰 정맥이라고 설명했다.anatomyorganphysiologymedicinebiologybodyChat with AIVocabulary GamePractice Reading
