It causes gaseous exchanges to take place in the lungs by ensuring that oxygen is carried to the blood through inspiration, and carbon dioxide is eliminated from the blood through expiration.
Movable cartilaginous plate ensuring that the larynx closes during ingestion of food so that food cannot enter the respiratory tract.
pharynx
Muscular membranous channel connecting the nasal cavity to the larynx and the oral cavity to the esophagus; it enables breathing, ingestion of food and speech.
Muscular cartilaginous tract that is a continuation of the larynx; it divides into two main bronchi, each of which ends in a lung, and allows air to pass.
Section of the left lung separated from the lower lobe by the oblique fissure.
aorta
Main artery of the body that originates in the left ventricle of the heart and is made up of four segments; it distributes oxygenated blood throughout the body.
Section of the left lung separated from the upper lobe by the oblique fissure.
diaphragm
Main muscle of inspiration separating the thorax from the abdomen; its contraction increases the size of the thoracic cage and lungs, into which inhaled air is carried.
heart
Muscular organ divided into four chambers; its regular rhythmic contractions cause blood to circulate throughout the organism.
