Plaid refers to the blanket-like garment called by the Irish a brat that was worn as a mantle over the shoulders. The belted plaid was a natural evolution that grew out of larger plaids being gathered up and belted at the waist, sometime during the late sixteenth century.
the human body will pump it's entire blood supply in 1 min. A good rule of thumb is 2 ounces per beat. The adult human body holds 4-6 liters of blood.
How Much Blood Does the Heart Pump? â Test your knowledge. How many gallons of blood does the heart pump each day?