Flashcards in intro Deck (25)
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1
what is a drug?
an external substance that acts on living tissue to produce a measurable change in the function of that tissue
2
what is the function of local anaesthetic?
prevent pain
3
what is the function of antimicrobials?
treat and prevent infection
4
what is the function of anxiolytics?
reduce anxiety
5
what is the function of analgesics?
reduce post op pain
6
what 3 things can drugs do?
simulate normal body communications
interrupt normal body communication
act on non-host organisms to aid body defences
7
how does the host communicate?
hormone messages
-general info to all tissues
neural messages
-targeted info for specific tissues
8
why may high doses of one hormone mimic the effects of another?
there is a lot of similarity in the structure of different hormones
9
what do thyroid hormones do?
balance body's metabolism
10
what happens when the level of thyroid hormones are wrong?
too much- hyperthyroidism
too little- hypothyroidism
11
what drugs can replace the missing active thyroid hormone?
T3 & T4
-thyroxine dose adjusted to correct level gradually
12
what are the symptoms of hypothyroidism?
cold intolerance
coarse skin
memory loss
slow pulse
low metabolism
13
what are the symptoms of hyperthyroidism?
rapid metabolism
high pulse
sweating and heat intolerance
anxiety & agitation
weight loss
14
what are the components of the autonomic nervous system?
sympathetic
-adrenaline
parasympathetic
-acetylcholine
15
how does the sympathetic ns control the HR?
adrenergic stimulation
speeds up heart via beta-receptors
16
how does the parasympathetic ns control the HR?
cholinergic stimulation
slows the heart via cholinergic receptors
17
what does topical mean?
drug applied to the tissue where it acts
18
what does systemic mean?
drug applied to whole organism
19
what does parenteral mean?
drug administered by injection
20
what does transdermal mean?
drug applied to skin for adsorption
21
what does subcutaneous mean?
injected into the tissues of the skin
22
what does intramuscular mean?
injected into muscle
23
what does intravenous mean?
injected into vein
24
what does transmucosal mean?
applied to mucosa for adsorption
25
