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12. Impressiones digitatae.
13. Transfusio sanguinis.
14. Insufficientia valvae mitralis.
15. Articulatio composita.
16. Nervus sublinguales.
17. Nodi lymphatici praepericardiales.
The contents of the topic:
Both Latin and Greek prefixes are used in medical terminology. Some of
them are formed by prepositions and particles and have literal meaning. They can
also express non-literal meaning (especially in clinical disciplines). These prefixes
do not change the meaning of a stem but intensify it.
Latin prefixes usually occur in anatomical and histological terminology and
Greek ones are widely used in clinical terminology.
Combining forms derived from adjectives (Greek mes(o) – from mesos –
middle), and Latin or Greek numerals (Latin uni – one, single; bi – twice; Greek
mono – one, single; di – twice) which are placed in front of a word are also called
prefixes.
The final consonant of a prefix is often assimilated with the first consonant of
a stem, e. g.: afferens – afferent, conveying towards the centre (from ad – ferens);
difficilis – difficult (from dis – facilis).
The prefix in- followed by the consonants b, m, p changes into im-, e. g.:
imberbis – beardless (from in – barba – beard); immobilis – immobile (from in –
mobilis – mobile); impotentia – impotence (from in – potentia – potency).
The prefix in- followed by the consonants l and r changes into il- and ircorrespondingly,
e. g.: illaesus – not damaged, without lesion (from in – laesus –
hurt, damaged); irrationalis – irrational (from in – rationalis – rational).
Latin prepositions are usually attached to Latin stems, and Greek ones are
attached to Greek stems, e. g.: pertussis – whooping cough (from Latin per –
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