lined with mucous membrane and fine hairs; it acts as a filter to moisten and warm the entering air.
serves as a food and air passageway. Air enters from the nasal cavities and passes through the pharynx to the larynx. Food eneters the pharynx from the mouth and passes into the esophagus.
flap of cartilage that automatically covers the opening and keeps food from entering the larynx during swallowing.
one of the two branches from the trachea that conducts air into the lungs, where it divides and subdivides. The branchings resemble a tree; therefore they are referred to as a bronchial tree.
air sacs at the end of the bronchioles. Oxygen and carbon dioxide are exchanged through the alveolar walls and the capillaries.
two spongelike organs in the thoracic cavity. The right lung consists of three lobes, and the left lung has two lobes.
double-folded serous membrane covering each lung and lining the thoracic cavity with a small space between, called the pleural cavity which contains serous fluid.
muscular partition that separates the thoracic cavity from the abdominal cavity. It aids in the breathing process by contracting and pulling air in, then relaxing and pushing air out.
space between the lungs. It contains the heart, esophagus, trachea, great blood vessels, and other structures.
inflammation of the larynx, trachea, and bronchi (the acute form is called croup)
pertaining to the lobes; diseased state of the lung (infection of one or more lobes of the lung)
diseased state of the lung (the infection and inflammation are caused by bacteria such as pneumococcus, staphylococcus, streptococcus, viruses, fungi)
air in the chest(pleural space), which causes collapse of the lung (often a result of an open chest wound)
adult respiratory distress syndrome (ARDS)
respiratory failure as a result of disease or injury. symptoms include dyspnea, tachypnea, and cyanosis (also called adult respiratory distress syndrome)
respiratory disease characterized by paroxysms of coughing, wheezing, and shortness of breath, which is caused by constriction of airways that is reversible between attacks.
chronic obstructive pulmonary disease (COPD)
a progressive lung disease that restricts air flow, which makes breathing difficult. Chronic bronchitis and emphysema are two main components, maybe caused by chronic asthmatic bronchitis
fungal disease affecting the lungs and sometimes other organs of the body (also called valley fever or cocci)
condition resulting from acute obstruction of the larynx, characterized by a barking cough, hoarseness and stridor. Caused by viral, or bacterial infection, allergy, or foreign body. Occurs mainly in children.
cystic fibrosis (CF)
hereditary disorder of the exocrine glands characterized by excess mucus production in the respiratory tract, pancreas deficiency, and other symptoms.
one part of the nasal cavity is smaller because of malformation or injury of the nasal septum.
obstructive sleep apnea (OSA)
repetitive pharyngeal collapse during sleep, which leads to absence of breathing, can produce daytime drowsiness and elevated blood pressure.
highly contagious bacterial infection of the respiratory tract characterized by an acute crowing inspiration or whoop (also called whooping cough)
pulmonary embolism (PE)
matter foreign to the circulation, carried to the pulmonary artery and it's branches, where it blocks circulation to the lungs and can be fatal. Blood clots broken loose from the deep veins of the lower extremities are the most common source of emboli.
an infectious disease, caused by an acid-fast bacillus most commonly spread by inhalation of small particles and usually affecting the lungs.