Anatomy and Metallic Biomaterials
MSc
202 - 202
When
the ventricles contract, atrioventricular valves close to prevent blood from flowing back into the atria. When the ventricles relax, semilunar valves close to prevent blood from flowing back into the ventricles. E- The urinary system : The urinary system's function is to filter blood and create urine as a waste byproduct. The organs of the urinary system include the kidneys,
renal pelvis, ureters, bladder and urethra- The kidneys remove urea from the blood through tiny filtering units .
2- Two ureters:These narrow tubes carry urine from the kidneys to the bladder. Muscles in the ureter walls continually tighten and relax forcing urine downward, away from the kidneys.
3-
Bladder This triangle-shaped, hollow organ is located in the lower abdomen. The bladder's walls relax and expand to store urine, and contract and flatten to empty urine through the urethra.
Anatomy and Metallic Biomaterials
MSc
202 - 202
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