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Haemoglobin: the red coloured
iron protein that carries oxygen in red cells.
Hamstrings:The
group of 3 muscles on the back of the thigh that runs from
the lower part of the pelvis to just below the knees. They
allow you to bend your knees and, along with the "glutes"
straighten your legs at the hips
Health:The
absence of disease or injury along with physical, mental,
and social well-being.
High Density Lipoproteins HDL: Lipoprotein
particles that transport cholesterol to the liver. Sometimes
called "good cholesterol".
HLA: human leucocyte antigens
which are natural markers on white cells much the same as
blood groups on red cells.
Homeostasis:The
maintenance of consistent internal body conditions. It is
achieved by a series of negative-feedback control mechanisms.
For example, when sensors detect overheating of the body,
sweating is stimulated until the body temperature returns
to normal.
Hormone: a chemical substance
produced by endocrine glands which causes specific effects
on other cells.
Hydration:The
amount of fluid in the body. It is important to drink at least
64oz. of water throughout the day. More may be required to
replace any fluid the body loses during physical activity.
Hyperosmolar Coma: A coma (loss
of consciousness) related to high levels of glucose (sugar)
in the blood and requiring emergency treatment. A person with
this condition is usually older and weak from loss of body fluids
and weight. The person may or may not have a previous history
of diabetes. Ketones (acids) are not present in the urine. |
Hyperglycaemia: blood glucose
higher than normal.
Hypertension:The medical term
for high blood pressure. Hypertension is associated with severe
obesity.
Many individuals requiring medication for hypertension are
able to decrease or eliminate these medicines after surgically-assisted
weight loss.
Hypertrophy:
Hypertrophy is the increase of the size of an organ. It should
be distinguished from hyperplasia which occurs due to cell
division; hypertrophy occurs due to an increase in cell size
rather than division. It is most commonly seen in muscle that
has been actively stimulated, the most well-known method being
exercise.
Hypoglycaemia:
too low a level of glucose (sugar) in the blood. This occurs
when a person with diabetes has injected too much insulin,
eaten too little food, or has exercised without extra food.
A person with hypoglycemia may feel nervous, shaky, weak,
or sweaty, and have a headache, blurred vision, and hunger.
Taking small amounts of sugar, sweet juice, or food with sugar
will usually help the person feel better within 10-15 minutes.
Hypotension:In
physiology and medicine, hypotension refers to an abnormally
low blood pressure. It is often associated with shock, though
not necessarily indicative of it.
Hypothermia:The
dangerous lowering of body temperature. Prolonged exposure
to cold water leads to hypothermia and possibly death if the
core temperature drops below 80 degrees.
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