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Anabolism

/əˈnabəˌlizəm/ Noun 1. The set of metabolic pathways that construct molecules from smaller units. These reactions require energy. (wikipedia.org) 2. The constructive metabolism of the body, as distinguished from catabolism. (wiktionary.org) 3. The phase of metabolism in which simple substances are synthesized into the complex materials of living tissue. (The American Heritage® Dictionary of the English Language, Fourth Edition) 4. The process involving a sequence of chemical reactions that constructs or synthesizes molecules from smaller units, usually requiring input of energy (ATP) in the process. (biology-online.org) 5. The synthesis in living organisms of more complex substances (e.g., living tissue) from simpler ones together with the storage of energy). (wordnetweb.princeton.edu) Word origin: From Greek ana, “upward”, and ballein, “to...

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Anatomy

/əˈnatəmē/ Noun, pl. anatomies 1. Branch of biology that deals with the study of form and function, in plants, animals, and other organisms, or specifically in humans. (dictionary.com) 2. This is a branch of biology and medicine that considers the structure of living things. 3. The bodily structure of an organism or of any of its parts. (biology-online.org)   Word origin: from the Ancient Greek ἀνατέμνειν, anatemnein: ana (separate, apart from), and temnein, (to cut up, cut...

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Angle of Louis

Noun 1. The anterior angle formed by the junction of the manubrium and the body of the sternum (the manubriosternal junction) in the form of a secondary cartilaginous joint (symphysis). This is also called the manubriosternal joint or Angle of Louis. The sternal angle is a palpable clinical landmark. (wikipedia.org) 2. The angle between the manubrium and the body of the sternum at the manubriosternal junction. Marks the level of the second costal cartilage (rib) for counting ribs or intercostal spaces. Denotes level of aortic arch, bifurcation of trachea, and T4/T5 intervertebral disc. (biology-online.org) Syn: Sternal angle, angulus sterni, louis’ angle, ludwig’s angle, manubriosternal junction. Word origin: Named after Pierre Charles Alexandre Louis, a French...

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Animal

/ˈanəməl/ Noun, pl. animals 1. A living organism belonging to Kingdom Animalia that possess several characteristics that set them apart from other living things, such as: a. being eukaryotic (i.e. the cell contains a membrane-bound nucleus) and usually multicellular (unlike bacteria and most protists, an animal is composed of several cells performing specific functions) ; b. being heterotrophic (unlike plants and algae that are autotrophic, an animal depends on another organism for sustenance) and generally digesting food in an internal chamber (such as a digestive tract); c. lacking cell wall (unlike plants, algae and some fungi that possess cell walls); d. being generally motile, that is being able to move voluntarily; e. embryos passing through a blastula stage; f.  possessing specialized sensory organs for recognizing and responding to stimuli in the environment. (biology-online.org) 2. A living organism that feeds on organic matter, typically having specialized sense organs and nervous system and able to respond rapidly to stimuli. (dictionary.com) Adjective 1. Of or relating to animals (biology-online.com) Word origin: Middle English, from Latin, from animāle, neuter of animālis, living, from anima,...

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Anisogamy

/ˌanīˈsägəmē/ Noun 1. Refers to a form of sexual reproduction involving the union or fusion of two dissimilar gametes (differing either in size alone or in size and form).The smaller gamete is considered to be male (sperm cell), whereas the larger gamete is regarded as female (egg cell). (wikipedia.org) 2. Condition in which gametes which fuse differ in size and/or motility....

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