The proximal convoluted tubule, the nephron loop, and the distal convoluted tubule are all components of the nephron.
The nephron is the basic functional unit of the kidney and is responsible for filtering blood to produce urine. The PCT is a complex structure that consists of several parts, including the proximal convoluted tubule, the nephron loop, and the distal convoluted tubule.
The Proximal convoluted tubule is the first part of the nephron and is responsible for reabsorbing about 65% of the water and solutes that are filtered from the blood.
The nephron loop is a U-shaped loop that extends into the medulla of the kidney. It is responsible for creating a concentration gradient in the medulla, which is important for reabsorbing water from the urine.