Flashcards in intro Deck (25)
what is a drug?
an external substance that acts on living tissue to produce a measurable change in the function of that tissue
what is the function of local anaesthetic?
what is the function of antimicrobials?
treat and prevent infection
what is the function of anxiolytics?
what is the function of analgesics?
reduce post op pain
what 3 things can drugs do?
simulate normal body communications
interrupt normal body communication
act on non-host organisms to aid body defences
how does the host communicate?
-general info to all tissues
-targeted info for specific tissues
why may high doses of one hormone mimic the effects of another?
there is a lot of similarity in the structure of different hormones
what do thyroid hormones do?
balance body's metabolism
what happens when the level of thyroid hormones are wrong?
too much- hyperthyroidism
too little- hypothyroidism
what drugs can replace the missing active thyroid hormone?
T3 & T4
-thyroxine dose adjusted to correct level gradually
what are the symptoms of hypothyroidism?
what are the symptoms of hyperthyroidism?
sweating and heat intolerance
anxiety & agitation
what are the components of the autonomic nervous system?
how does the sympathetic ns control the HR?
speeds up heart via beta-receptors
how does the parasympathetic ns control the HR?
slows the heart via cholinergic receptors
what does topical mean?
drug applied to the tissue where it acts
what does systemic mean?
drug applied to whole organism
what does parenteral mean?
drug administered by injection
what does transdermal mean?
drug applied to skin for adsorption
what does subcutaneous mean?
injected into the tissues of the skin
what does intramuscular mean?
injected into muscle
what does intravenous mean?
injected into vein
what does transmucosal mean?
applied to mucosa for adsorption