Vital organs / unconscious state
The heart is a muscular organ that pumps blood throughout the body and ensures adequate oxygenation of tissues; it is composed of four chambers – two atria & two ventricles – as well as valves & electrical pathways which ensure coordinated pumping action .
The lungs are responsible for gas exchange between the atmosphere and bloodstream by taking in oxygen from the air we breathe and expelling carbon dioxide into it . It consists of many branching airways (bronchial tree) with alveoli along their walls where actual gas exchange takes place.
The kidneys filter waste substances from the blood while also controlling levels of water , electrolytes , acids & other bodily fluids in order to maintain homeostasis.
The brain is responsible for coordinating all functions within our bodies through this central processing unit ; it receives information from sensory receptors then processes it before sending out signals to voluntary muscles or glands when necessary .< br > The liver produces bile which aids digestion as well as enzymes involved in various metabolic reactions such as sugar & fat metabolism. Additionally , it serves an important role in detoxification by breaking down toxic substances so that they can be excreted from our bodies .
Today’s exceptions include artificial organs such as artificial hearts, lung machines, dialysis machines etc., which have been developed over time to support failing or damaged organs. These devices provide short-term relief until a donor organ becomes available or more permanent solutions are found.