Varicose veins. For other uses, see Varices. Varicose veins are veins that have become enlarged and twisted. The term commonly refers to the veins on the leg, although varicose veins can occur elsewhere. Veins have pairs of leaflet valves to prevent blood from flowing backwards (retrograde flow or venous reflux). Leg muscles pump the veins to return blood to the heart (the skeletal-muscle pump), against the effects of gravity.
Ethos (/ËiËÎ¸És/ or US /ËiËÎ¸oÊs/) is a Greek word meaning  character  that is used to describe the guiding beliefs or ideals that characterize a community, nation, or ideology. The Greeks also used this word to refer to the power of music to influence its hearer's emotions, behaviors, and even morals.thos forms the root of ethikos (á¼ Î¸Î¹ÎºÏÏ), meaning moral, showing moral character. Used as a verb in the neuter plural form ta ethika (Ïá½° á¼ Î¸Î¹ÎºÎ¬), used for the study of morals, it is the origin of the modern English word ethics.
Ethos can be developed by choosing language that is appropriate for the audience and topic (also means choosing proper level of vocabulary), making yourself sound fair or unbiased, introducing your expertise or pedigree, and by using correct grammar and syntax.