Question

this ball of capillaries is surrounded by bowmans capsule and is the site of filtration. glomerulus ureter proximal convoluted tubule collecting tubule

Explanation:

The glomerulus is a ball - shaped cluster of capillaries surrounded by Bowman's capsule and is the main site of filtration in the kidney. The ureter transports urine from the kidney to the bladder. The proximal convoluted tubule and collecting tubule are involved in reabsorption and further processing of the filtrate.

Answer:

Glomerulus