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Urinary System (Kidney image (Renal Hilum (Cross- Section of Kidney…

- - - - Renal Cortex
      - Renal Medulla
        
        Renal Pyramids
        
        Renal Papillae
        
        Renal Column separating Renal Pyramids
      - Minor and Major Calyx
      - Ureter
      - Renal Pelvis
      - Millions of Nephrons
        
        Ureter
        
        Urinary Bladder
        
        Trigone Junction - Sensitive to expansion -> after a point sends signal to Brain -> Time to Pee
        
        Urethra
        
        Internal Involuntary Spinchter, closed when bladder isn;t full
        
        External Voluntary Spinchter
        
        Drains urine from bladder
        
        can hold 750 ml of urine in men and slightly less in women
        
        Rugae - Muscles that expand on filling and contracts when empty
        
        Blood Filtration - Blood pressure forces water and other solutes to move into BC
        
        Reabsorption - Reabsorbs nutrients that is required
        
        PCT with Microvilli,
        
        Concentrates the fluid in Loop of Henle and DCT (smaller dia and lack of Microvilli)
        
        Secretion -
- - - - Glomerulus Capillaries
        
        Efferent Arterioles
        
        Cortical Radiate Veins
        -> Arcuate Veins
        -> Interlobar Vein
        
        Renal Vein