Isotopes when written out are common nouns, and should begin with the uncapitalized element name, followed by a hyphen (not an em dash or en dash) and then the mass number. Examples are carbon-14 and uranium-235.
The central region of the kidney contains the renal pelvis, which is located in the renal sinus, and is continuous with the ureter. The renal pelvis is a large cavity that collects the urine as it is produced. The periphery of the renal pelvis is interrupted by cuplike projections called calyces.
Identify the parts and histology kidney nephrons. 1  The glomerulus is the site in the nephron where fluid and solutes are filtered out of the blood to form a glomerular filtrate.  The proximal and distal tubules, the loop of Henle, and the collecting ducts are sites of reabsorption of water and ions.