a & P slides 25-50 Flashcards
during active expiration do you use your accessory muscles?
yes
how does active expiration further reduce the size of the thoracic cavity?
by pressing the abdomen and forcing more air out of the lungs beyond the passive expiration level.
How many cycles will an adult complete per minute of quiet tidal breathing?
12-18 cycles per minute.
how is one cycle of quiet tidal breathing defined?
one cycle of inspiration and expiration
What is the type of breathing that is considered to be respiration for life?
Quiet tidal breathing.
Dr, C said that we really should only do how many cycles of quiet tidal breathing during class but we do 12-18/ min?
6 cycles per minute (takes about 10 seconds to complete one cycle of exp and insp.
What are the 4 types of respiration?
Quiet inspiration
forced inspiration
passive expiration
active expiration
What type of inspiration utilizes the diaphragm and the external intercostal muscles but not the accessory muscles?
Quiet inspiration
During forced inspiration what muscles are used?
diaphragm, external intercostals and many of the accessory muscles.
Give an example of when you would use forced inspiration?
when you are speaking
What type of expiration only uses the forces (gravity, torque and elasticity)?
passive expiration
why is passive expiration a passive process?
No muscles are used it is just the 3 forces (torque, gravity and elasticity)
T or F. During active expiration you use muscular effort to push beyond the resting position.
True.
What does FVC stand for?
Forced vital capacity. (all the air you can take in during 1 breath)
What does FEV1 stand for?
Forced expiratory volume in the 1st second.
What are the two methods used to measure/assess respiration?
the spirometer
and the manometer
Spirometer measures what?
it measures respiratory flow, volumes and lung capacity (FVC, FEV1)
What is spirometry measured in?
Liters or mL
What percent should the ratio between FVC and FEV1 be?
75%
What instrument measures air pressure?
manometer
what Is MIP?
Maximum inspiratory pressure
What is MEP?
Maximum expiratory pressure.
What two things does manometry measure?
MIP and MEP
What do you measure MIP and MEP in?
Centimeters of water
What applies a number to the amount of air in each compartment of the respiratory system (ie. alveoli)?
Is it:
a. volumes
b. capacities
a. volume (measured in ML or L)
What are more functional untis of measurement that represent a combination of volumes?
a. volumes
b. capacities
b. capacities (measured in ML or Liters)
What are the four types of volumes for respiration?
Tidal volume (TV)
Inspiratory Reserve Volume (IRV)
Expiratory Reserve Volume (ERV)
Residual Volume (RV)
What type of volume measures the volume of air exchanged in one cycle of respiration?
Tidal volume (TV)
What does Inspiratory Reserve Volume measure?
The volume of air that can be inhaled after tidal inspiration (ex. yawn)
What does Expiratory Reserve volume measure?
the volume of air that can be expired after a tidal expiration. (FEV1)
What volume measures the amount remaining in the lungs after maximum exhalation?
Residual volume (RV)
What are the 2 lung capacities that you want to examine/assess for respiration?
Vital capacity (VC)/ (FVC) Total lung capacity (TLC)
Vital capacity/ Forced vital capacity measures what?
The volume of air that can be inhaled following maximal inspiration.
What capacity represents the capacity available for speech?
vital capacity
IRV + ERV + TV =
VC
What is the capacity that is = to the sum of inspiratory reserve volume, tidal volume, expiratory reserve volume and residual volume?
Total lung capacity
TLC=IRV+ERV+RV
T or F. You must have enough air (volume/capacities) in order to get words out.
True
The respiratory system operates at two levels of pressure simultaneously. What are these two levels?
first: the constant supply of subglottal pressure required to drive the vocal folds.
2nd: the minimum power source to make the vocal folds move
what is the minimum power needed to make the vocal folds move?
3cm-5cm of H20
T or F. 3-4cm H20 will barely be heard.
True
What cm/h20 is required for conversational speech?
What dB?
It requires 7cm h20 or 65 db
what type of speech needs at least 12 cm H20 or 85 db?
louder speech
what is air pressure?
air pressure is the force exerted on the walls of a chamber by molecules of air.