Multiple choice

The blood vessel that receives back the reabsorbed material is ___________.

  1. efferent renal artery

  2. pulmonary artery

  3. glomerulus

  4. vasa recta

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Each human kidney has about one million structural and functional units called nephrons. Each nephron is made up of 2 main parts: malphigian body and renal tubule. Malphigian body comprises a cup shaped Bowman's capsule and a network of blood capillaries, the glomerulus. The renal artery after entering the kidney divides and redivides forming various afferent renal arterioles. An afferent arteriole enters a Bowman's capsule to form glomerulus. The efferent renal arteriole has narrower lumen than the afferent renal arteriole. Thereafter, an efferent renal arteriole leaves the glomerulus. The efferent renal arteriole breaks up into capillaries around the tubules. All the capillaries, in turn, unite to form renal venules and the latter together form the renal vein, which leaves the kidney. Vasa recta are the capillaries around this loop of Henle. The vasa recta help to retain reabsorbed ions and urea.