5005 Blue Notes Practice Test

Removing waste from the body is the job of the excretory system. It filters the blood through the kidneys to remove metabolic wastes like urea, excess water, and salts, forming urine that is stored in the bladder and expelled via the urethra. This system also helps regulate fluid and electrolyte balance, keeping the body’s internal environment stable. The respiratory system handles waste in the form of carbon dioxide and water vapor, but the excretory system is the primary pathway for eliminating most wastes. The endocrine system deals with hormones, and the nervous system with signaling and coordination, rather than excretion.