Stock Photo - ANATOMY, URINARY TRACT<BR>Model of the internal anatomy of the trunk of an adult human body of indeterminate sex, anterior view. In the thorax, the heart (atria covered by the auricles (beige) and ventricles for coronary circulation) and the lungs (internal view showing vascularization and bronchial branching) are visible. The esophagus, (tan) visible in the thorax between the lungs, protrudes into the abdominal cavity, where the deep organs can be seen here thanks to the removal of both the digestive system (liver, gallblader, stomach, pancreas, intestines) and the reproductive organs. A portion of the rectum (brown) appears in frontal section above the urinary bladder. The spleen (mauve) is located laterally against the abdominal wall. The kidneys (maroon) are surmounted by the adrenal glands (orange). The urine produced by the kidneys is carried by the ureters (beige ducts) to the urinary bladder (tan), located in the pelvic cavity, where it is stored before being excreted. The abdominal aorta (red) divides into the right and left common iliac arteries, then into the external iliac arteries in the pelvis to irrigate the lower limbs. In parallel, the external iliac veins (blue), draining the lower limbs, empty into the common iliac veins, which join up to form the inferior vena cava carrying deoxygenated blood towards the heart. The muscles (flesh-colored) covering the abdominal wall appear in the background. The left thigh section shows blood and lymph circulation (white blood vessels and yellow nodes).