专业术语—口腔生理学术语I4(英文详解)_医务英语

    intermediate filaments - unlike microfilaments and microtubules, they are verystable. instead of being stacked proteins, as in actin, intermediate filaments are built of interlocking proteins. a dense sheet of intermediate filaments strengthens the nucleus. skin cells are filled with keratin, which at the last moment, just before they die. they cross link, to provide a really insoluble barrier layer of the skin. the cross linkage is between the sulphur atoms of cysteine, one of keratin's amino acids.

    interproximal wear - loss of enamel on the adjacent surfaces of teeth which is due to continual friction between the two surfaces as teeth move against each other.

    intratubular dentine - dentine formed inside the tubule by the odontoblast process in response to tooth wear, ageing or arrested caries.

    intrinsic fibres - refers to those fibres of cementum which were laid down by cementoblasts.

    ionised - the loss or gain of an electron from an atom which makes it no longer neutral but an electrically charged ion. if the electron leaves the atom it becomes a positively charged ion, such when calcium or sodium becomes ionised (ca+, na+). if the electron is gained, the atom becomes relatively negatively charged such as when chlorine or a phosphate group of atoms lose an electron (cl-, po4-). ionized atoms or groups of atoms are more reactive than when they are neutral.

    ions - an atom or molecules which has a net electrical charge this may be caused by the temporary loss (positive ion) or gain (negative ion) of an electron. a calcium ion is written ca+.

    ipsilateral - the same side as distinct from contralateral. often used to refer to the teeth, joint or muscles on the same side as chewing is occurring.