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.
The second source of body water is metabolic water, the water produced by the various chemical reactions of the body. It amounts to about 200 ml/day. Therefore, preformed water + metabolic water = 2, 500 ml/ day. Describe the mechanism by which fluid intake is regulated by thirst.