Ultrafiltration: Ultrafiltration is a process used to separate particles and molecules from a solution based on their size. The process involves forcing a solution through a membrane filter with small pores in order to separate the components. The size of the pores determines which molecules are retained and which are allowed to pass through.
Reabsorption and Secretion: Reabsorption and secretion are processes that occur in the kidneys. Reabsorption occurs when substances, such as glucose and amino acids, are taken from the glomerular filtrate and returned to the blood. Secretion occurs when substances, such as drugs and other toxins, are taken from the blood and added to the glomerular filtrate.
Absorption of Water: Water absorption is the process by which water is taken up by cells, tissues, and organs from their environment and transported throughout the body. This process is essential for maintaining homeostasis and for the transport of nutrients and other substances throughout the body.
