Respiratory System Flashcards
(37 cards)
Nose
external nares (nostrils)
Nasal cavity
filters, warms, moistens incoming air; passageway to pharynx
Paranasal sinuses
produce mucus; act as resonators for sound; lighten skull
Nasal Conchae
bony prominences that provide space for nasal meatuses through which incoming air is warmed and humidified.
Pharynx
chamber shared by the digestive and respiratory system; passageway for air between nose and larynx and for food from mouth to esophagus
Larynx
(voice box) inferior to hyoid bone and superior to trachea. Cartilaginous structure surrounding glottis and vocal cords; passageway for air between pharynx and rest of respiratory tract; produces sound; protects trachea from foreign objects.
Thyroid cartilage
largest laryngeal cartilage (commonly called Adam’s Apple)
Cricoid cartilage
(krikos; ring) laryngeal cartilage inferior to thyroid cartilage
Glottis
passageway from pharynx to the larynx
Epiglottis
(epi- ; above) (glotta; tongue) composed of elastic cartilage, the epiglottis folds back over the glottis, during swallowing to prevent entry of food or liquids into the respiratory passageways
Trachea
windpipe passageway for air to and from thoracic cavity; traps and expels foreign matter
Diaphragm
muscle separating thoracic cavity from abdominopelvic cavity enlarges thoracic cavity to allow for inspiration, returns to original position for expiration
Bronchus (pl. Bronchi)
passageways for air to and from lungs; filter air
Bronchioles
passageways for air to and from alveoli
Alveoli
site of gas exchange; functional units of lungs
Lungs
major respiratory organs.
Pleura (pl. Pleurae)
(pleural; side) protects, compartmentalizes, and lubricates outer surfaces of lungs; enclose pleural cavities
Mediastinum
the region between the two pleural cavities, also contains the thymus, esophagus, and trachea.
Respiration
process by which oxygen and carbon dioxide are exchanged in the lungs and tissues
Ventilation
(breathing) is the process by which air enters the lungs and is expelled from the lungs
Pulmonary
(pulmo- = lungs) pertaining to the lungs
Dyspnea
difficulty in breathing
Apnea
period of no respiratory activity
Hyperventilation
Rapid and deep breathing leading to an excessive intake of oxygen and elimination of carbon dioxide which can lead to respiratory alkalosis