Question 16 (0.75 points) √ Saved Which one of the following is a part of the circulatory system? distal tubules Bowman's capsule collecting duct glomerulus

The correct answer is **glomerulus**.<br /><br />The glomerulus is a network of capillaries at the beginning of the nephron in the kidney. While it is part of the urinary system and crucial for filtering blood and producing urine, it's also intimately connected to the circulatory system. Blood enters the glomerulus through the afferent arteriole (a branch of the renal artery) and exits through the efferent arteriole. The filtration process in the glomerulus relies on blood pressure and the permeability of the capillary walls.<br /><br />The other options are all parts of the nephron involved in urine formation but are not directly part of the circulatory system:<br /><br />* **Distal tubules:** These are responsible for fine-tuning the ion and water balance of the urine.<br />* **Bowman's capsule:** This surrounds the glomerulus and collects the filtrate.<br />* **Collecting duct:** This receives urine from multiple nephrons and carries it to the renal pelvis.<br />