well it means u have problems ofc like heartburn and other things sometimes they cant always see whats happening but i bet its nothing to bad hope this helps tho
Answer:
It moves through the coronary arteries to the heart.
Explanation:
Once blood as been oxygenated in the lungs, it has completed the pulmonary cycle and then enters the heart. It enters the heart through the coronary arteries. Once it is in the heart it can be pumped throughout the body
I would recommend studying and then looking it up
Answer:
A and B. Observations and Strength tests
if only one answer allowed, then it's A