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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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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
KAMISHNA

