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.
The cortex is the superficial outer layer of the kidney located underneath the capsule. The medulla is the inner layer and it extends from the renal cortex to the renal sinus. The medulla is divided into various cone-shaped structures called the renal pyramids.tructures such as the renal veins, artery, nerves and lymphatic vessels are located in the renal hilum. The renal sinus is a fat-filled cavity inside the kidney that extends from the hilum. At the hilum the ureters also exit the kidney. The kidney is covered by a fibrous renal capsule.