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Terms in this set (87)
what is the respiratory upper and lower airways
system composed of?
what are the two areas of pharynx and larynx
the upper airways?
what is the role of the warm, filter, and humidify air taken in through the nose
pharynx? and mouth
what is the role of the housing the vocal cords
larynx?
what does the lower airway trachea, bronchi, bronchioles, alveoli
include?
in what structure of the alveoli
lungs does gas exchange
take place?
what allows the lungs to pleural fluid in the pleural cavity
expand and contract
smoothly?
what is tightening of the bronchus due to the contraction of the
bronchoconstriction? smooth muscle
what is bronchodilation? expansion of the airway in the bronchus
space or cavity between the visceral and parietal layers
what is the pleural cavity?
of the lung
what is the pleura? a protective layer or membrane covering the lungs
a muscle that separates the chest cavity from the
what is the diaphragm?
abdominal cavity and innervated by nerves
a lubricant made in the lungs to keep the alveoli from
what is a surfactant?
collapsing during exhalation
, collapse of airways and small sections of the lung as a
what is atelactasis? result of shallow breathing and mostly happens during
expansion
how do the large airways diffusion
and bronchioles deliver gas
to the alveoli?
what is ventilation? the flow of air inside or outside the alveoli
the flow of blood by the cardiopulmonary system into
the alveolar capillaries where deoxygenated blood is
what is perfusion?
exchanged for oxygenated blood in the heart and
delivered to the rest of the body
what is responsible for brainstem
monitoring the body's
oxygen demand and
carbon dioxide levels and
signals the respiratory
system to respond to
excess or under-supply?
the point to which a lung can expand in response to
what is lung compliance?
increased pressure within the alveoli (interalveolar)
pressure or opposition of the tissues in the airway to
what is airway resistance?
flow of air
what is pulmonary the movement of blood from the heart to the lungs
circulation? from the capillaries for gas exchange and back
the relaxation phase of the cardiac cycle where the
what is diastole? heart muscle is relaxed and the chambers of the heart
fill with blood
the contraction phase of the cardiac cycle when the
what is systole? mitral and tricuspid valves close and the blood is
ejected into the aorta and pulmonary arteries
the volume of blood ejected by the heart ventricles in
what is cardiac output? one minute; calculated by multiplying the stroke volume
and pulse rate of the heart
volume of blood ejected by the left ventricle during
what is stroke volume?
one contraction
the blood remaining in the left ventricle at the end of
what is preload?
diastole causing it to stretch