respiratory phys lab Flashcards
quiz 4
obstructive lung diseases obstruction of the lungs causes air to be trapped in the lungs when it cannot be exhaled
obstructive lung diseases
example of obstructive lung diseases
chronic obstruction pulmonary disorder (COPD)
loss of elastiity in the lungs, lungs become stiffer and less air is brought into lung tissue
restrictive lung diseases
the amount of air inhaled or exhaled on a normal breath
tidal volume
the additional air that can be forcefully inhaled past a normal tidal volume inspiration
inspiratory reserve volume
the additional air that can be forcefully exhaled past a normal tidal volume
expiratory reserve volume
the volume of air remaining in the lungs after a maximal exhalation
reserve/reserve volume
the total amount of air that can be forcefully expired after a maximal inhalation
vital capacity
the maximum amount of air that can be inspired after a normal expiration
inspiratory capacity
the total amount of air remaining in the lungs after a normal exhalation
functional residual capacity
the total amount of air the lungs can contain
total lung capacity
medical test used to measure the four lung volumes
spirometry
longer breath holding time
better pulmonary function
functional reserve
larger lung capacity
respiratory system and cardiovascular system function to
take oxygen into body from atmospheric air and deliver it to tissue cells
carbon dioxide builds up in the blood, pH of blood becomes more acidic
respiratory acidosis
measure tidal volume
dry gas meter
body rate of energy expenditure
metabolic rate
rate of oxygen consumption is equal to
ventilation
perfusion
the rate at which you obtain oxygen from the environment
ventilation
the rate at which oxygen is delivered to the body tissue cells through capillary walls
perfusion
increase ventilation by
increasing respiratory depth (tidal volume) and respiratory rate
increase perfusion
increase heart rate
flow of air into and out of the lungs
minute volume (Vm)
balance of exchange between ventilation and perfusion
ventilation-perfusion coupling
increase or decrease in the rhythm, and rates of respiration is controlled by
respiratory centers
respiratory centers are located in the
medulla and pons
blood pH
7.35-7.45
carbon dioxide leaves tissues and enters blood combines w water to form
carbonic acid
carbonic acid disassociates to form
bicarbonate and hydrogen ions
concentration of carbon dioxide in blood decreases, decrease in hydrogen ions, increase in pH
respiratory alkalosis
many breaths in a short period of time
hyperventilation
inflammation in the bronchioles reducing the amount of oxygen that can reach the alveoli
asthma
is asthma reversible
yes - periods of symptom free
are COPDs reversible
no irreversible