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Regulation



           muscle and adipose tissues and stimulating  factors. Since glucose is the primary energy
           the conversion of glucose to glycogen in  source for the body, especially for the brain,
           the liver. Conversely, glucagon is released  maintaining stable blood sugar levels is
           when blood sugar level is low, signaling  crucial for overall health and proper
           the liver to convert glycogen back to  physiological function.
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           glucose and release it into the bloodstream.
           The hormones are regulated by negative  Causes
           feedback.                                  Hypoglyacemia can be caused by drugs,
                                                      hormone deficiencies, tumours, failure of
           Insulin reduces the glucose level in the   organs such as kidney, liver or heart. It
           blood by stimulating the cells of the body   may also be caused by strenous exercise
           except the brain cells to take up glucose   immediately after eating and gastrointestinal
           from the blood. It lowers glucose in the   surgery.
           blood by converting glucose to glycogen
           and stores it in the liver and muscle cells.   Symptoms
           Insulin also blocks the conversion of amino   The brain is the first organ to feel the effects
           acids and glycerol to glucose.             of hypoglyacemia. Early symptoms includes
                                                      headaches, excessive sweating, blurred
           The liver stores carbohydrates as glycogen.
           The cells of the liver are extremely sensitive   vision or dizziness, trembling, depression,
           to glucagon. Glucagon directs the liver cells   anxiety, heart palpitations, slurred speech,
           to convert glycogen to glucose. Glucagon   seizures, and coma. Frequent hunger can
           initiates the release of glucose back into   be a sign of hypoglyacemia, indicating that
           the blood circulation when glucose level   the blood sugar level is too low.
           is low in the blood. Glucagon and insulin   Effects
           are critical hormones in blood glucose
           control and they work cooperatively with   Inadequate supply of glucose can result
           the liver. Although nutrition is a key factor   in impairment of cognitive function,
           in stabilising the level of blood sugar, there   reducing alertness and increasing the risk
           are other factors that can cause fluctuation   of accidents or injuries. Recurrent episodes
           in blood sugar levels.                     of hypoglycemia, particularly in individuals
                                                      with diabetes, can lead to hypoglycemia
           Hypoglyacemia                              unawareness, a condition in which the body
                                                      no longer signals early warning symptoms,
           Hypoglycemia is a condition characterized   making severe hypoglycemic events more
           by abnormally low blood glucose levels,    dangerous. Long-term complications
           typically  below  70  mg/dL.  It  is  most   include damage to the nervous system and
           commonly associated with diabetes          cardiovascular stress, which may increase
           management, but it can also occur in       the risk of heart disease and stroke.
           other medical conditions and individuals
           without diabetes due to various underlying



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                                                                                          23/10/2025   11:52:49
     BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd   123
     BIOLOGY FORM 3 FINAL EDITED 16.09.2025.indd   123 KAMISHNA                           23/10/2025   11:52:49









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