A bacteriostatic is a compound that prevents bacterial growth. Though a bacteriostatic won't kill bacteria, it will limit the...
1 Cortex â the outer region of the kidney; extensions of the cortical tissue, contains about one million blood filtering nephrons. 2  Nephron â these are the filtration units in the kidneys. 3  Medulla â inner region of the kidney contains 8-12 renal pyramids.
For other uses, see Cortex (disambiguation) . The renal cortex is the outer portion of the kidney between the renal capsule and the renal medulla. In the adult, it forms a continuous smooth outer zone with a number of projections (cortical columns) that extend down between the pyramids.he renal cortex is the outer portion of the kidney between the renal capsule and the renal medulla.