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.
The renal pelvis is a hollow area in the centre of each kidney where urine collects. The renal artery brings blood to the kidney. The renal vein takes blood back to the body after it has passed through the kidney. The renal hilum is the area where the renal artery, renal vein and ureter enter the kidney.The nephrons are the millions of small tubes inside each kidney. Each nephron has 2 parts. Tubules are tiny tubes that collect the waste materials and chemicals from the blood moving through the kidney.he renal vein takes blood back to the body after it has passed through the kidney. The renal hilum is the area where the renal artery, renal vein and ureter enter the kidney. The nephrons are the millions of small tubes inside each kidney. Each nephron has 2 parts.