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| GLOSSARY OF TERMS |
Terms Starting with Letter: H
hallux - big toe, the one other than the digits
hematemsis - Vomiting of blood.
hematochezia - Passage of bloody stools, in contradistinction
to melena, or tarry stools.
hematocrit - Percentage of volume of a blood
sample occupied by cells
hematuria - Any condition in which the urine
contains blood or red blood cells.
hemoptysis - The spitting of blood derived from
the lungs or bronchial tubes as a result of pulmonary
or bronchial hemorrhage.
hilum - 1.The part of an organ where the nerves
and vessels enter and leave 2.A depression or slit resembling
the hilum in the ovary in the ovialary nucleus of the
brain.
hilum of lung - a wedge shaped depression on
the mediastinal surface of each lung, where the bronchus,
blood vessels, nerves, and lymphatics emerge from the
medulla and through which blood vessels enter and leave
the node.
hilum of lymph node - the depressed area of the
lymph node through which tje efferent lymphatics emerge
from the medulla and through which blood vessels enter
and leave the node.
hilus - former word for hilum. See definintion
for hilum. hydronephrosis - an accumulation of urine
in the kidney due to the kinkning of the ureter which
blocks the drainage of urine
hypercalcemia - An abnormally high concentration
of calcium compounds in the circulating blood
hyperparathyoidism - A condition due to an increase
in the secretion of parathyroids, causing elevated serum
calcium, decreased serum phosphorus and increased excretion
of calcium and phosphorus.
hypertrophy - increase in size
hypophosphatemia - Abnormally low concentrations
of phosphates in the circulating blood
hypothyroidism - Diminished production of thyroid
hormone, leading to thyroid insufficiency, low metabolic
rate, and weight gain.
hypoxia - A decrease below normal levels of oxygen
in inspired gases, arterial blood, or tissue.
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