👉 Internal fluids, also known as bodily fluids, are essential liquids found within the human body that serve various crucial functions. These include blood, which transports oxygen, nutrients, hormones, and waste products; synovial fluid, which lubricates joints and reduces friction; cerebrospinal fluid (CSF), which cushions and protects the brain and spinal cord; and pleural fluid, which lubricates the lungs and prevents them from collapsing during breathing. Each type of internal fluid plays a vital role in maintaining homeostasis, facilitating movement, and supporting overall bodily functions.
