Respiratory System, Respiratory System Flashcards
oxygen
most _________ in the blood is carried bound to hemoglobin
nasal cavity
the cavity behind the nose and above the roof of the mouth that filters air and moves mucous and inhaled contaminants outward and away form the lungs.
bronchioles
small tubes that branch off the bronchi that contain clusters of alveoli at each end.
cilia
The fine hairlike projections from certain cells such as those in the respiratory tract that sweep in unison and help to sweep away fluids and particles
trachea
The main air tube leading into the respiratory system. The trachea is made of alternating rings of cartilage and connective tissue.
larynx
voice box; passageway for air moving from pharynx to trachea; contains vocal cords
smoking
chronic bronchitis, emphysema, lung cancer, and heart disease can be caused by this
respiratory system
system responsible for taking in oxygen and releasing carbon dioxide using the lungs
capillaries
tiny, thin-walled blood vessels that allow the exchange of gases and nutrients between the blood and the cells of the body
organs of the respiratory system
Lungs, bronchi, trachea, pharynx, larynx, epiglottis, nose
mucus
a slimy substance produced in the nose and throat to moisten and protect them
Alveoli
tiny sacs of lung tissue specialized for the movement of gases between air and blood
Bronchi
Two short branches located at the lower end of the trachea that carry air into the lungs.
Bronchioles
progressively smaller tubular branches of the airways
Cilia
short structures projecting from a cell and containing bundles of microtubules that move a cell through its surroundings or move fluid over the cell's surface
Coughing
the act of exhaling air suddenly with a noise
Expiration/Exhalation
the act of expelling air from the lungs
Inhalation/Inspiration
the act of inhaling
Larynx
a cartilaginous structure at the top of the trachea, enable speech
Lungs
two spongy organs, located in the thoracic cavity enclosed by the diaphragm and rib cage, responsible for respiration
Nose (nasal cavity)
warms, moistens, & filters air as it is inhaled
sneezing
a symptom consisting of the involuntary expulsion of air from the nose
Trachea
membranous tube with cartilaginous rings that conveys inhaled air from the larynx to the bronchi
Yawning
an involuntary intake of breath through a wide open mouth
Bronchitis
inflammation of the membranes lining the bronchial tubes
Diaphragm
muscle that forms the thoracic floor, when it contracts it flattens and help lungs expand for inhalation