R = Resistance of blood vessel. Blood flows from area of high pressure to an area of low pressure, down the pressure gradient. When heart contracts, it gives pressure to the blood, which is main driving force for flow through a vessel.Due to resistance in the vessel, the pressure drops as blood flows. = Resistance of blood vessel. Blood flows from area of high pressure to an area of low pressure, down the pressure gradient. When heart contracts, it gives pressure to the blood, which is main driving force for flow through a vessel. Due to resistance in the vessel, the pressure drops as blood flows.
(July 2016) I'd Rather Go Blind is a blues song written by Ellington Jordan and co-credited to Billy Foster. It was first recorded by Etta James in 1967, released in 1968, and has subsequently become regarded as a blues and soul classic.
In 1738 it was used by Jonathan Swift in his Polite Conversation and is first attested in the United States in the 1713 Works of Thomas Chalkley. The full saying is: There are none so blind as those who will not see. The most deluded people are those who choose to ignore what they already know.