Friday, 17 May 2024, 7:35 AM
Site: VetLogic - E Learning and training for Vet Nurses
Course: VetLogic - E Learning and training for Vet Nurses (VetLogic)
Glossary: Glossary with audio assistance
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Haematocrit a test to measure the red blood cells as a percentage of the total volume of blood. Haematocrit is the calculated number, using an analyser, whereas packed cell volume (PCV) is derived from manual measurement. |
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Haematopoiesis formation of blood and blood cells
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Haematuria presence of blood in the urine
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Haemoglobinuria presence of haemoglobin in the urine
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Haemothorax blood in the pleural cavity |
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Hair bulb matrix part of the hair that is situated at the end of the follicle and produces the cells of the hair |
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Haploid cell cell with half the number of chromosomes, and no pairs. These include the gametes (i.e. sperm and ova). |
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Haploid number a single set of chromosomes (n) found in the nuclei of gametes, this is half the number of chromosomes found in the nuclei of all other eukaryotic cells |
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Haversian system a unit of bone structure in which the bone cells are arranged in concentric circles
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Healthy carriers animals that have not shown clinical signs of disease |
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Hering Breuer reflex reflex pathway between pulmonary stretch receptors and the brain that prevents overinflation of the lungs
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High voltage transformer increases the incoming mains voltage (240 V) to thousands of volts (kV) |
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Histology the study of normal healthy tissues using a microscope |
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Histones proteins that bind to DNA in eukaryotic cells |
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Homeostasis the maintenance of a constant internal environment
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Hypercalcaemia increased blood calcium level
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Hypercapnia increased carbon dioxide levels - end tidal and in the blood |
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Hyperglycaemia increased blood glucose level
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Hyperkalaemia increased blood potassium level
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Hypertension higher than normal blood pressure |
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Hyperthermia higher than normal body temperature |
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Hyperthyroidism disease caused by excess thyroid hormone in the blood
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Hypertonic fluid has a higher concentration of solutes than blood plasma and causes water to be drawn out of the cells into the circulation |
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Hyperventilation excessive rate and depth of ventilation |
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Hypervolaemia abnormal increase in blood volume |
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Hypoadrenocorticism disease caused by insufficient adrenocortical hormones; also known as Addison's disease
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Hypocapnia decreased carbon dioxide levels - end tidal and in the blood |
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Hypoglycaemia decreased blood glucose level
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Hypotension lower than normal blood pressure |
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Hypothermia lower than normal body temperature |
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Hypothyroidism disease caused by a lack of thyroid hormone in the blood
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Hypotonic fluid has a lower concentration of solutes than blood plasma and causes water to enter the cells |
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Hypovolaemia abnormal decrease in blood volume |
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Hypoxaemia decreased level of oxygen in the blood |
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Hypoxia decreased level of oxygen in the body tissues |
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