Question

atrium or ventricle or vena cava which is odd one out

Answer 1

I think that the suitable answer is vena cava because the rest two are chambers and it is not.

Answer 2

Answer: I think its vena cava

Explanation:

Because atrium and ventricle both are chambers of heart but vena cava is large vein which supplies deoxygenated blood from the parts of body to the heart .