The captured Africans were held in forts, sometimes called 'slave castles', along the coast. They remained there for months until finally leaving their homeland for an unknown destination on board European merchant ships, including those of the British Royal African Company.
Key Points. 1  The majority of fluid output occurs from urination. Some fluid is lost through perspiration (part of the body's temperature control mechanism) and as water vapor in expired air. 2  The body's homeostatic control mechanisms ensure that a balance between fluid gain and fluid loss is maintained.
Low urine output, or no urine output, occurs in the setting of kidney failure as well as in urinary obstruction. As the kidneys fail or become compromised in their ability to function, the kidneys lose the ability to regulate fluids and electrolytes and to remove waste products from the body.