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Urinary System

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  • 3 Waste Products eliminated through the urinary system

    Nirtogenous waste

    Toxins

    Drugs

  • 4 organs of the urinar y system and their functions

    -Kidney: Filter blood, produce urine (nephrons)

    -Ureter: Tubes to move urine from kidneys to bladder

    -Urinary Bladder: Holding tank for urine

    -Urethra: Deliver urine outside the body

  • How are the urethras different in men and womem?

    Men: Longer and transport urine and semen

    Women: Shorter; transports urine only

  • What types of muscles are the urinary and most of the digestive system composed of? Remember under involuntary control

    smooth muscle (involuntary)

  • 3 regions of the kidney

    1. Renal Cortex (outer region)

    2. Renal Medulla (deeper region-includes the pyraminds triangular regions of tissue in the medulla)

    3. Renal Pelvis medial region that is a flat funnel-shaped tube

  • What is a nephron?

    Functional unit of the kidney

  • 2 different types of nephrons and where are they located

    Cortical Nephron: Entirely in Renal Cortex

    Juxtamedullary Nephron: Renal Cortex and Renal Medulla

  • Three processes that form urine number one:

    Glomerular Filtration: water and solutes smaller than proteins are forced through capillary walls into urine

  • Three processes that form urine number 2:

    Tubular reabsorption: Water, Glucose, amino acids, needed ions back into blood (through blood capillaries running along renal tubule)

  • Three processes that form urine number 3

    Tubular Secretion: Drugs, K+, H+, urea (end product of protein breakdown), Uric acid (nucleic acid breakdown), Creatinine (metabolic waste from muscles) into urine.