General Science第 74 / 120 题
Which organ system is responsible for pumping blood throughout the body?
a.Digestive system
b.Circulatory system
c.Nervous system
d.Respiratory system
解析
The circulatory system, centered on the heart and blood vessels, pumps blood to deliver oxygen and nutrients. The respiratory system handles breathing, and the digestive system processes food.
免费刷完整 120 道题库 — 无需注册。
同考点相关题目
- The process by which liquid water turns into water vapor is called:
- Which of these is an example of a chemical change?
- The Richter scale is used to measure the strength of:
- What type of energy is stored in a stretched rubber band?
- Which part of the atom carries a negative electric charge?
- Photosynthesis produces oxygen and which sugar?