Which organ is regarded as a pump in the blood circulation?
A: Heart
B: Artery
C: Vein
D: Capillary
A: Heart
B: Artery
C: Vein
D: Capillary
举一反三
- The heart is an important organ of circulation ________ function is to pump blood to all parts of the body.
- Which of the following means heart chamber? A: vein B: ventricular C: artery D: capillary
- 29. The heart is an important organ of circulation ________ function is to pump blood to all parts of the body. A: which B: whose C: of it D: its
- Phlebitis is inflammation of the ______. A: vein B: artery C: capillary D: intestine
- （ ） acts as a pump to maintain a constant circulation to blood throughout the body. A: heart B: kidneys C: lungs D: liver