👉 The fluid in a body, primarily blood but also encompassing other bodily fluids like lymph, is determined by several key factors including the volume of blood produced by the heart, the rate at which blood is filtered from the capillaries, and the overall health of the circulatory system. The heart's pumping action plays a crucial role in driving blood through the arteries, veins, and capillaries. Additionally, the balance between fluid intake and output, regulated by hormones like antidiuretic hormone (ADH) and aldosterone, helps maintain fluid equilibrium. In conditions like dehydration or overhydration, the body's regulatory mechanisms adjust to maintain homeostasis, ensuring that fluid levels remain within a healthy range.
