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  • Princess Maranda posted an update in the group Group logo of Histology Art (MT 30 - J)Histology Art (MT 30 – J) 4 years, 4 months ago

    The urinary system, also known as the renal system, produces, stores and eliminates urine, the fluid waste excreted by the kidneys. The kidneys make urine by filtering wastes and extra water from blood. Urine travels from the kidneys through two thin tubes called ureters and fills the bladder. When the bladder is full, a person urinates through the urethra to eliminate the waste.

    • The ureters are fibromuscular tubes that transport urine by peristalsis from the kidney to the bladder. Like the bladder, it is lined by transitional epithelium (urothelium).

      • The urinary bladder is a muscular sac that stores urine, allowing urination to be infrequent and voluntary. It is lined by transitional epithelium (urothelium), and has a thick layer of smooth muscle.

        • The kidneys are two bean-shaped organs that are roughly the size of a fist. A tough, fibrous renal capsule surrounds each kidney and provides support for the soft tissue inside. Beyond that, two layers of fat serve as further protection. The adrenal glands lie on top of the kidneys.

          The main role of the kidneys is maintaining homeostasis. They manage fluid levels, electrolyte balance, and other factors that keep the internal environment of the body consistent and comfortable.

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