👉 Fluids in the body, including blood, lymph, sweat, urine, and saliva, originate from various sources. Blood, the primary fluid, is produced by the heart's pumping action and derived from red blood cells, white blood cells, platelets, and plasma. Lymph, a key component of the immune system, is generated from lymph nodes and tissues. The kidneys produce urine, a fluid that helps eliminate waste and excess water through filtration. Sweat glands secrete sweat, primarily composed of water and electrolytes, to regulate body temperature. Additionally, the digestive system contributes to saliva production, which aids in digestion and maintains oral health. These sources work together to maintain homeostasis and support bodily functions.
