Answer:
The correct answer is A, as the statement is true. All blood returns to the heart by way of either the superior vena cava or the inferior vena cava.
Explanation:
The heart pumps blood to all parts of the body. Blood supplies oxygen and nutrients to the entire body and removes carbon dioxide and residual elements. As blood travels through the body, oxygen is consumed and blood becomes deoxygenated.
Deoxygenated blood returns from the rest of the body to the heart through the superior vena cava and the inferior vena cava, the two main veins that carry the blood back to the heart.
Answer:
The correct answer is B
Explanation:
Arteriolls regulate peripheral vascular resistance. Blood pressure is defined by cardiac output and peripheral vascular resistance, therefore these vessels have the ability to modify their caliber to maintain adequate blood pressure levels.
Answer:
A drug treatment that reduces the risk of relapse to 0
Answer:
Pulmonary circulation
Explanation:
is the movement of blood from the heart to the lungs for oxygenation, then back to the heart again. Oxygen-depleted blood from the body leaves the systemic circulation when it enters the right atrium through the superior and inferior venae cavae.
