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This glossary of biology terms is a list of definitions of fundamental terms and concepts used in biology, the study of life and of living organisms.It is intended as introductory material for novices; for more specific and technical definitions from sub-disciplines and related fields, see Glossary of cell biology, Glossary of genetics, Glossary of evolutionary biology, Glossary of ecology ...
Wordsum is a 10-item vocabulary test that has been included as an item on the General Social Survey (GSS) in most survey years since 1974. [1] Each of the test's items ranges in difficulty from very easy to very difficult. It is widely used in research in the social and behavioral sciences. [2]
A vocabulary (also known as a lexicon) is a set of words, typically the set in a language or the set known to an individual. The word vocabulary originated from the Latin vocabulum, meaning "a word, name". It forms an essential component of language and communication, helping convey thoughts, ideas, emotions, and information.
In forming or understanding a word root, one needs a basic comprehension of the terms and the source language.The study of the origin of words is called etymology.For example, if a word was to be formed to indicate a condition of kidneys, there are two primary roots – one from Greek (νεφρός nephr(os)) and one from Latin (ren(es)).
The elderly also have more brittle veins, making chronic subdural bleeds more common. [11] Infants, too, have larger subdural spaces and are more predisposed to subdural bleeds than are young adults. [3] It is often claimed that subdural hematoma is a common finding in shaken baby syndrome, although there is no science to support this. [8]
Blood accounts for 7% of the human body weight, [9] [10] with an average density around 1060 kg/m 3, very close to pure water's density of 1000 kg/m 3. [11] The average adult has a blood volume of roughly 5 litres (11 US pt) or 1.3 gallons, [10] which is composed of plasma and formed elements.
Hemoglobin is an iron-containing protein that gives red blood cells their color and facilitates transportation of oxygen from the lungs to tissues and carbon dioxide from tissues to the lungs to be exhaled. [3] Red blood cells are the most abundant cell in the blood, accounting for about 40–45% of its volume.
Cord blood is composed of all the elements found in whole blood – red blood cells, white blood cells, plasma, platelets. [6] Compared to whole blood some differences in the blood composition exist, for example, cord blood contains higher numbers of natural killer cells, lower absolute number of T-cells and a higher proportion of immature T-cells. [7]