Identify the structure at the tip of the arrow:
Question 7 - Single Best Answer
Identify the structure at the tip of the arrow:
B) collecting duct
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Since collecting ducts are located in the medullary rays, most of the tubules present should be oriented parallel to each other without turns or bends evident in the section. Collecting ducts display many more nuclei than similar sized distal tubules (convoluted or straight). In addition, the borders between individual cells within the epithelium are typically quite evident.
