It is a protuberance in vertebrates that houses the nostrils, or nares, which admit and expel air for respiration. It also houses the nosehairs, which catch airborne particles and prevent them from reaching the lungs. Within and behind the nose there is the olfactory mucosa and the sinuses.
(or nasal concha) is a long, narrow and curled bone shelf (shaped like an elongated sea-shell) which protrudes into the breathing passage of the nose. The turbinates divide the nasal airway into three groove-like air passages -and are responsible for forcing inhaled air to flow in a steady, regular pattern around the largest possible surface of cilia and climate controlling tissue.
A sinus is a sack or cavity in any organ or tissue, or an abnormal cavity or passage caused by the destruction of tissue.
Paranasal sinuses are air-filled spaces, communicating with the nasal cavity, within the bones of the skull and face The paranasal sinuses are joined to the nasal cavity via small orifices called ostia.
The section of the alimentary canal that extends from the mouth and nasal cavities to the larynx, where it becomes continuous with the esophagus.
A thin-walled, cartilaginous tube descending from the larynx to the bronchi and carrying air to the lungs. Also called windpipe.
A tiny, thin-walled, capillary-rich sac in the lung where the exchange of oxygen and carbon dioxide takes place. Also called air sac.
The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs.
A muscular membranous partition separating the abdominal and thoracic cavities and functioning in respiration. Also called midriff.
A thin serous membrane in mammals that envelops each lung and folds back to make a lining for the chest cavity.
One of two masses of lymphoid tissue located at the back of the nose in the upper part of the throat that may obstruct normal breathing and make speech difficult when swollen. Often used in the plural.
Cilia are thin, tail-like projections extending approximately 5 - 10 micrometers outwards from the cell body. There are two types of cilia: motile cilia, which constantly beat in one direction, and non-motile cilia, which typically serve as sensory organelles.
Brings the mucus upward so it can be swallowed and digested by the gastric juices
The tissue of the lung performing its function; the alveoli and the small bronchioles
A chronic reversible resperatory disease that is characterized by sudden recurring attacks of labored breathing, chest constriction, and coughing. Asthma attack is often triggered by cold, allergies, pollution, emotional factors, and other unidentified factors.
Is defined clinically as a persisten cough that produces sputum matter that is coughed up from the respiratory tract, for at least three months in two consecutive years.
A pathological condition of the lungs marked by an abnormal increase in the size of the air spaces, resulting in labored breathing and an increased susceptibility to infection. It can be caused by irreversable expansion of the alveoli or by the destruction of the alveolar walls.
It is chracterized by loss of elasticity of the lung tissue, destruction of structures supporting the alveoli, and destruction of capillaries feeding the alveoli. The result is that the small airwars collapse during expiration, leading to an obstructive form of lung disease (airflow is impeded and air is generally "trapped" in the lungs in obstructive lung diseases).
(1) Total or partial collapse of the lung. (2) A congenital condition characterized by the incomplete expansion of the lungs at birth.
Chronic inflammatory disease in which small nodules or tubercules develop in the lungs, lymph nodes, and other organs.
A usually malignant tumor of mesothelial tissue, especially that of pleura or peritoneum.
Course rattlin sound somewhat like snoring, usually caused by secretion in a bronchial airway