Answer:
Filtration.
Explanation:
Urine formation occurs in three steps: filtration, reabsorption, and secretion. Filtration involves the transfer of water, and waste (soluble components) from the blood into the glomerulus, and glomerular is defined as the small group of intertwined capillaries within nephrons of the kidney which helps to filter the blood to make urine.
During the filtration process, blood enters the arteriole than flow into the glomerulus where water, and nitrogenous waste (filterable blood components), will move inside of the glomerulus, and cells, and serum albumins (non-filterable components) will exit from the arteriole. To form the glomerular filtrate, filterable components accumulated in the glomerulus.
Goal of 1st line of defense: to prevent pathogen from entering body
There are physical and chemical barriers where all exposed body entrances would be. Ex. Skin, mouth, eyes, nostrils.
-The skin: composed of tough dead cells that are constantly shedding- physical barrier bc it prevents pathogen from latching on. Skin also contains sweat and oil glands that secrete acids and oils that prevent the growth of pathogens- chemical barrier. Also, sweat contains lysozyme.
Saliva and tears: protect the mouth and the eyes from pathogen invasion. Saliva and tears contain lysozyme.
Nostrils, digestive + respiratory tracts lined with another barrier: mucous.
Hemostasis is the stopping of blood when one is bleeding, meaning that when you bleed from a cut, hemostasis is the process that makes you stop bleeding, to keep you from losing too much blood.
Chemotherapy is the use of various toxic chemicals to kill off rapidly multiplying cells.
