Respiration is the process by which 02 is taken in and CO2 is given out. The first breath takes place only after birth. Fetal...
The Esophagus is a muscular tube, about 25 cm long that lies posterior to the trachea. The esophagus begins at the inferior...
Respiration is the process by which 02 is taken in and CO2 is given out. The first breath takes place only after birth. Fetal...
Chronic obstructive pulmonary disease, clinically term for a group of a pathological condition in which there is a chronic, partial or complete...