-
nose
structure that warms, moistens, and filters air as it enters the respiratory tract and that houses the olfactory receptors for the sense of smell
-
sinuses
air-filled spaces in the skull that open into the nasal cavity
-
palate
partition between the oral and nasal cavities; divided into the hard and soft palate
-
pharynx
throat; passageway for food to the esophagus and air to the larynx
-
nasopharynx
part of the pharynx directly behind the nasal passages
-
oropharynx
central portion of the pharynx between the roof of the mouth and the upper edge of the epiglottis
-
laryngopharynx
lower part of the pharynx just below the oropharynx opening into the larynx and the esophagus
-
tonsils
oval lymphatic tissues on each side of the pharynx that filter air to protect the body from bacterial invasion - also called palatine tonsils
-
adenoid
lymphatic tissue on the back of the pharynx behind the nose - also called pharyngeal tonsil
-
uvula
small projection hanging from the back middle edge of the soft palate, named for its grape-like shape
-
larynx
voice box; passageway for air moving from pharynx to trachea; contains vocal cords
-
glottis
opening between the vocal cords in the larynx
-
epiglottis
lid-like structure that covers the larynx during swallowing to prevent food from entering the airway
-
trachea
windpipe; passageway from the larynx to the area of the carina where it splits into the right and left bronchus
-
bronchial tree
branched airways that lead from the trachea to the alveoli
-
right and left bronchus
two primary airways branching from the area of the carina into the lungs
-
bronchioles
progressively smaller tubular branches of the airways
-
alveoli
thin-walled microscopic air sacs that exchange gases
-
lungs
two spongy organs, located in the thoracic cavity enclosed by the diaphragm and rib cage, responsible for respiration
-
lobes
subdivisions of the lung, two on the left and three on the right
-
pleura
membranes enclosing the lung an lining the thoracic cavity
-
pleural cavity
potential space between the visceral and parietal layers of the pleura
-
diaphragm
muscular partiton that separates the thoracic cavity from the abdominal cavity and aids in respiration by moving up and down
-
mediastinum
partition that separates the thorax into two compartments and encloses the heart, esophagus, trachea, and thymus gland
-
mucous membranes
thin sheets of tissue that line the respiratory passages and secrete mucus, a viscid fluid
-
cilia
hair-like processes from the surface of epithelial cells, such as those of the bronchi, that provide upward movement of mucus cell secretions
-
parenchyma
functional tissues of any organ such as the tisses of the bronchioles, alveoli, ducts, and sacs that preform respiration
|
|