UNITEK LVN RESPIRATORY SYSTEM
CORRECT 100%.
respiratory system - ANSWERComprises the upper and lower respiratory tract,
delivers rich oxygen to the body and excretes carbon dioxide from the body. Filters
and humidifies inhaled air, regulates acid base balance, produces sound (voice),
houses olfactory (smell) chemoreceptors
Bronchitis - ANSWERinflammation of the bronchi
Emphysema - ANSWERA serious disease that destroys lung tissue and causes
breathing difficulties.
bronchial tree - ANSWERthe branching system of bronchi and bronchioles
conducting air from the windpipe into the lungs. Consists of bronchi, bronchioles,
alveoli. Resembles a upside down tree. Trachea divides in two brinchi left and right.
Left bronchi is narrower and positioned more horizontally than the right bronchus.
upper respiratory tract - ANSWEROutside chest cavity; nose, nasal cavities,
pharynx, larynx, and upper trachea
lower respiratory tract - ANSWERlower trachea, bronchi, bronchioles, alveoli
Trachea - ANSWERThe windpipe; a passage through which air moves in the
respiratory system. I inch diameter extends from larynx down to thoracic cavity
where it splits into right and left bronchi
thyroid cartilage - ANSWERAdam's apple, anterior cartilage that covers the larynx
Lung expansion depends on what to expand? - ANSWERDepends on the pressure
within the intrapleural space
What are the two reasons why lungs collapse? - ANSWERelastic recoil and surface
tension
elastic recoil - ANSWERLungs can stretch but recoils and returns to its unstretched
position if tension is released. (Think of balloon)
surface tension - ANSWEREletrical attraction of the water molecule is surface
tension; tend to collapse the alveoli
Surfactants - ANSWERAllows the alveoli to expand and deflate; detergent like
COPD (chronic obstructive pulmonary disease) - ANSWERA group of lung diseases
that block airflow and make it difficult to breathe. Asthma, bronchitis, emphysema
