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Urinary System - Coggle Diagram

- - - - decreases urine volume
        
        retains water
  - - - decreases urine volume (via Na⁺ reabsorption)
        
        raises blood pressure
  - - - increases urine volume
        
        lowers blood pressure
  - - - decreases urine
        
        raises blood pressure
        
        conserves sodium and water
- - - - Nephron loops extend into the medulla
      - play a key role in concentrating urine and regulating blood volume
      - Renal corpuscle near the
        cortical medullary border
    - - Nephron loops do not extend into the medulla
      - primarily responsible for reabsorption and secretion
      - Renal corpuscle nearer to the
        periphery of the cortex
  - - - network of capillaries
      - blood enters through the afferent arteriole, and exits through the efferent arteriole
    - - chamber that surrounds glomerulus
      - simple squamous epithelium
- - - - example - low blood sodium levels, kidneys reabsorb more sodium to regulate levels
  - - - kidneys excrete H+ ions and reabsorbs HCO3 - (bicarbonate) ions
  - - - kidneys detect low BP and release renin, leads to aldosterone secretion and water/sodium reabsorption - increases BP
  - - - kidneys detect low oxygen levels and release erythropoietin, stimulates bone marrow to produce more red cells