Mastering Ex. 37: Respiratory System Physiology
_______ is the phase of pulmonary ventilation when air passes out of the lungs.
expiratory
Volume of air that can be forcefully exhaled after normal expiration
expiratory reserve volume
Predict the vital capacity of a 20 year old 5'5" female who weighs 120 pounds. VC= (0.041)H-(0.018)A= 2.69
3.71 L
What is the total volume of exchangeable air for a normal male?
4800ml
During normal quiet breathing, about _______ ml of air moves into and out of the lungs with each breath.
500
Dry spirometers use a turbine that rotates as air passes through it, turning a needle to indicate air volume, what values would be needed to calculate a patient's vital capacity?
ERV, TV, IRV
Which volumes are combined to provide the inspiratory capacity?
TV and IRV
Changes in pH and oxygen concentrations in the blood are monitored by chemoreceptor regions in the ______.
aortic and carotid bodies
What is the most common method of CO2 transport?
as bicarbonate ions in the plasma
Rate and depth of breathing, hyperventilation and hypoventilation should have little to no effect on the acid-base balance of blood. T/F
false
The neural centers that control respiratory rhythm and maintain a rate of 12-18 respirations per minute are located in the medulla and thalamus. T/F
false
Volume of air remaining in the lungs after a normal respiration
functional residual capacity (FRC)
The max amount of air that can be inspired after a normal expiration
inspiratory capacity (IC)
Volume of air that can be forecefully inhaled following a normal inspiration.
inspiratory reserve volume (IRV)
Volume of air remaining in the lungs after forced expiration
residual volume (RV)
What does a spirometer measure?
respiratory volumes
Volume of air inhaled or exhaled with each breathe under resting conditions
tidal volume (TV)
The max amount of air contained in the lungs after max inspiration
total lung capacity (TLC)
The maximal amount of air that can be expired after a max inspiration.
vital capacity (VC)
