Monday, 29 April 2024, 9:20 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
E

Ectoparasite

a parasite that lives on the outside of the host

Efferent nerve fibres

carry nerve impulses away from the central nervous system

Electrolyte

a liquid that contains ions (salts) such as sodium and potassium

Electromagnetic spectrum

Radiation which possesses electrical and magnetic properties

Electron

a negatively charged particle

Embolism

a clot, air bubble or debris (embolus) which is carried in the blood stream from one point in the circulation to lodge at another point

Embryo

stage of development in the zygote in which the external and internal structures are developing

Emesis

vomiting

Emetic

Something that induces vomiting

Emollients

substances such as liquid paraffin that will aid expulsion from the digestive tract

Emulsification

process where fat particles are broken down into smaller globules suspended in a liquid

Emulsion

a liquid in which droplets of other liquids are suspended, but the liquids do not mix

Endemic

a disease peculiar to or that occurs constantly in certain localities or populations

Endobronchial

positioned in the bronchus

Endocardium

the innermost layer of the heart

Endocrine gland

ductless gland whose secretions (hormones) reach their target organ via the bloodstream

Endocytosis

the movement of a substance, in bulk, into a cell by the formation of vesicles from the plasma membrane

Endoparasite

a parasite that lives inside the host

Endothermic

regulation of body temperature by internal heat production

Endotoxin

a toxic substance released by bacteria when the organism dies

Endotracheal

positioned in the trachea

Energy

the ability to do work; all the body's activities require energy which is provided by the consumption of food containing chemical energy

Enteral feeding

uses the gastrointestinal tract to provide nutrition

Enzootic

a disease peculiar to or that occurs regularly in certain localities or populations

Enzyme

a protein which is able to act as a catalyst within a living organism

Eosinopaenia

reduced numbers of circulating eosinophils in the blood

Eosinophil

type of granular white blood cell

Eosinophilia

increased number of circulating eosinophils in the blood. May be seen in cases of allergy or parasite infestation.

Epidermis

the tough outer protective layer of the skin

Epistasis

a gene that suppresses the activity of other genes at other loci

Epithelium

tissue composed of cells that lines the internal and external surfaces of the body; plural is epithelia

Eructation

a belch; oral ejection of gas or air from the stomach

Eruption of teeth

Process by which teeth break through the gum to appear in the jaw

Erythema

reddening of the skin

Erythroblasts

immature red blood cells

Erythrocytes

red blood corpuscles or cells

Erythropoiesis

the formation of red blood cells

Erythropoietin

hormone produced by the kidney which stimulates the bone marrow to produce new red blood cells

Eukaryote

a cell with cytoplasm containing a membrane-bound nucleus in addition to other organelles

Excretion

the process by which waste materials are removed from the body

Exocrine gland

gland whose secretions reach their target organ by means of a duct

Exocytosis

the movement of a substance, in bulk, out of a cell by fusion of vesicles containing the substance with the plasma membrane

Exothermic

regulation of body temperature by the external environment rather than by internal metabolism

Exotoxin

a toxic substance released by the living bacteria

Expiration

the process by which gas is expelled from the lungs - breathing out

Expiratory capacity

Expiratory reserve volume

the extra volume of air forced out of the lungs, above that of normal tidal volume after a forced expiration

External respiration

the exchange of gases between the atmospheric air and the blood. Also called breathing.

Exteroreceptors

sensory cells that receive information from the environment outside the body

Extracellular fluid (ECF)

fluid found outside the cells

Exudate

fluid with a high protein and cell content that has seeped out of the blood vessels and is found in tissues, usually as a result of inflammation