10_Excretory_System_S13

Sterility issues biology 1115 class outlines

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Unformatted text preview: ndle. So, the liver converts ammonia to urea (which is less toxic), which the kidneys then excrete. o Creatinine: created in muscle cells as creatine- PO4 is used for ATP production o Uric acid: produced as cells break down DNA and RNA • Other items such as: Basic characteristics of urine: • Water content: • pH range: • What should never be in urine? • Sterility issues: Biology 1115, Class Outlines and Study Guide 93 Control of urine volume and relationships to blood volume and pressure • Three hormones are used to control blood volume o ANP (atrial natiuretic peptide) which is made by the heart Trigger for secretion of the hormone: What does the hormone do? How does it work? What is the end result concerning urine volume? o ADH (anti- diuretic hormone) which is made by the hypothalamus and stored and released from the pituitary Trigger for secretion of the hormone: What does the hormone do? How does it work? What is the end result concerning urine volume? What inhibits this hormone? o Aldosterone which is made by the adrenal cortex Trigger for secretion of the hormone: What does the hormone do? How does it work? What is the end result concerning urine volume? What inhibits this...
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