I think it might be lyosomes as they help break down waste and other stuff in a cell.
Explanation:
the colors are not bright but not too dark , the material seems like not soft , and the patterns are not like anything I've seen before
<span>The correct answer is B. Pulmonary. The answers C. Cerebral and D. Extremity, are baseless regarding this question; A. Systemic could be a good alternative, as the blood flows from the systemic to the pulmonary circulation in the right side of the heart; but the systemic circulation is in fact mostly handled in the left side of the heart, while the right side handles the pulmonary one. </span>
Answer is number 1........