PATHOLOGY MCQ
RESPIRATORY SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
amount of air inspired and expired with each normal breath during rest or exercise.
|
|
|
is the greatest amount of air that can be made to pass into and out of the lungs by the most forceful inspiration and expiration.
|
|
|
the delivery of oxygen from the lungs to the bloodstream.
|
|
|
the movement of air from outside the body into the cells within tissues.
|
Detailed explanation-1: -It is the total amount of air exhaled after maximal inhalation. The value is about 4800mL and it varies according to age and body size. It is calculated by summing tidal volume, inspiratory reserve volume, and expiratory reserve volume. VC = TV+IRV+ERV.
Detailed explanation-2: -Some examples of spirometry measurements are: Forced vital capacity: the maximum amount of air you can forcibly exhale from your lungs after fully inhaling. It is about 80 percent of total capacity, or 4.8 liters, because some air remains in your lungs after you exhale.
Detailed explanation-3: -The additional volume of air a person can inspire by a forceful inspiration is called Inspiratory Reserve Volume (IRV). It is about 3000 ml.
Detailed explanation-4: -Vital capacity is the maximum amount of air a person can expel from the lungs after a maximum inhalation. It is equal to the sum of inspiratory reserve volume, tidal volume and expiratory reserve volume.