👉 Fluids are essential substances that play critical roles in the body's functions, encompassing various types of liquids and gases. The primary categories include water, blood, mucus, sweat, saliva, and digestive fluids like bile and pancreatic juice. Water is the most abundant fluid, comprising about 60% of an adult's body weight and vital for hydration, temperature regulation, and nutrient transport. Blood, a complex fluid made of plasma and cells, circulates throughout the body, delivering oxygen and nutrients while removing waste products. Mucus, a gel-like substance secreted by glands, acts as a protective barrier in the respiratory and digestive tracts, trapping particles and pathogens. Sweat, produced by sweat glands, helps regulate body temperature through evaporation. Saliva aids in digestion and maintains oral health by lubricating food and neutralizing acids. Digestive fluids, such as bile from the liver and pancreatic juices, are crucial for breaking down fats and proteins, facilitating nutrient absorption. Each fluid type serves specific physiological functions, highlighting the body's intricate balance and dependency on proper hydration and fluid composition.
