The parts labelled I and II make up the Malpighian body.
The Malpighian body is a structure found in the kidney that is responsible for filtering blood and forming urine. It is made up of two main parts: the glomerulus and Bowman's capsule.
The glomerulus is a small network of blood vessels that allows for the filtration of blood. It is located within Bowman's capsule, which is a cup-shaped structure that surrounds the glomerulus and collects the filtered blood and other fluids.
Together, the glomerulus and Bowman's capsule make up the Malpighian body, which is the functional unit of the kidney responsible for filtration and urine formation.
