The heart is a one-way pump. By maintaining a pattern of certain chambers opening and closing, constricting and relaxing, the blood is pumped one way and one way only. There are also hundreds of one-way valves throughout the arterial system that keep backflow from occurring.
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It is partly due to the way the heart pumps the blood and how it enters specific chambers of the heart at a time before being pumped out of the heart and around the body.
The semi lunar valves. I have no idea why they are 'lunar' as that is usually to do with the moon, but they are
energy flows in one direction and nutrients are recycled.
Yes. Electrical current only flows in a closed circuit. If it were an open circuit, there would be no current.AnswerAn interesting question. The answer is.... not necessarily! I say this because a capacitor is an open circuit, yet it allows d.c. current to flow for a short period of time (while it charges), and it allows a.c. current to flow continuously.
Its a structure attached to the gills of crustaceans like lobsters. it sort of beats, causing water to flow in and out of the gill chamber.
Decreased cerebral blood flow.
WRONG WAY signs posted at one endabsent yellow linesvehicles all pointing in one directionAdded: Rectangular sign containing a white arrow on a black background pointing in the direction of the traffic flow, with the words ONE WAY in black type centered within the white arrow.Also: A white arrow painted on the street surface pointing in the direction of the traffic flow.