The pharynx is a musculo-membranous tube that extends behind the nasal cavities, the mouth, and the larynx. The mucous membrane of the pharynx differs in its lining epithelium from one part to the other.
The pharynx is part of the respiratory system and digestive systems, The pharynx is the site of common illnesses, including sore throat and tonsillitis. The pharynx carries air to the respiratory system, It delivers...
The human body contains a system that is responsible for the extraction of oxygen from the air and then transfers it to the blood, then to the cells of the body, this system is...
The heterotrophic organism ( consumer ) obtains its food in the form of ready organism materials which are large and complex molecules , These molecules can not diffuse through the cell membrane of living...
