kidneys

abdominal adrenal anatomical anatomy and angle are artery background biology blood body calyx capsule care cavity cortex cross design diagram disease drawing each education gland gutter health healthcare healthy human illustration internal kidney kidneys lie located medical medicine medulla more object oblique one organ paravertebral part pelvis physiology position pyramid renal retroperitoneal science scientific section side slightly specifically spine study supply symbol system the there two ureter urinary urology vein