Blood enters the heart through two large veins, the inferior and superior vena cava, emptying oxygen-poor blood from the body into the right atrium of the heart. As the atrium contracts, blood flows from your right atrium into your right ventricle through the open tricuspid valve.
Answer: This is an example of <em>tolerance. </em>
Explanation:
When a person has tolerance that means that they will need more of the substance to get them to same level as before. Many people grow an tolerance to certain prescription drugs, drugs, etc. A doctor can prescribe a new medicine or up dosages to help the patient not use more of the medication than prescribed.
For Tayla, this means she will have to have more of the substance to achieve the level she had before.
I think the answer is source of influence
