GENERAL HISTOLOGY

Detailed explanation-1: -At each cell in your body, oxygen is exchanged for a waste gas called carbon dioxide. Your bloodstream then carries this waste gas back to the lungs where it is removed from the bloodstream and then exhaled. Your lungs and respiratory system automatically perform this vital process, called gas exchange.

Detailed explanation-2: -The lungs are responsible for the excretion of gaseous wastes, primarily carbon dioxide from cellular respiration in cells throughout the body. Exhaled air also contains water vapor and trace levels of some other waste gases. The paired kidneys are often considered the main organs of excretion.

Detailed explanation-3: -A kidney is the main excretory organ that filters the blood containing soluble waste material and then eliminates it in the form of urine.

Detailed explanation-4: -Bladder and kidneys are parts of excretory system which are responsible for removing wastes from the body.