respiration Flashcards
which of the following takes place when the diaphragm and external intercostal muscles contract
the volume of the thoracic cavity decreases
the volume of the thoracic cavity increases
the volume of the lungs decreases
the lungs shrink
the volume of the thoracic cavity increases
which one of the following produces Angiotensin Converting enzyme?
endothelial cells of the alveoli
endothelial cells of the alveolar capillaries
type 1 pneumocytes
type 2 pneumocytes
endothelial cells of the alveolar capillaries
the respiratory epithelium of the conducting airways consists of
moist cuboidal epithelium
pseudostratified ciliated columnar epithelium
simple squamous epithelium
ciliated squamous epithelium
psedudostratified ciliated columnar epithelium
the respiratory membrane of the gas exchange surfaces consists of
pseudostratified ciliated columnar epithelium
moist cuboidal epithelium
simple squamous epithelium
ciliated squamous epithelium
simple squamous epithelium
which portion of the airway constitutes the nasal cavity, pharynx, and larynx?
conducting
exchange
respiratory
sinus
conducting
in which direction does carbon dioxde move during internal respiration?
from the blood in to the tissue cells
from the blood in to the lungs
from the lungs in to the atmosphere
from the tissue cells in to the blood
from the tissue cells in to the blood
a patient has a respiratoy rate of 10 breaths per minute and a tidal volume of 600 mL. The dead space volume is 150 mL. Which one the following is the alveolar ventilation volume?
4500 mL
6000mL
1500 mL
2400 mL
4500 mL
which of the following can be calculated if the tidal volume and respiratory rate are known?
alveolar ventilation
pulmonary ventiliation
inspiratory reserve volume
expiratory reserve volume
pulmonary ventilation
the following is a list of some airways. What is the order in which air passes through them?
- secondary bronchus
- bronchioles
- alveolar ducts
- primary bronchus
- respiratory bronchiole
- alveoli
- terminal bronchiole
4, 1 2 5 7 3 6
1 4 2 5 7 3 6
1 4 2 7 5 3 6
4 1 2 7 5 3 6
4 primary bronchus
1 secondary bronchus
2 bronchioles
7 terminal bronchiole
5 respiratory bronchiole
3 alveolar ducts
6 alveoli
which one the following statements is true?
both right and left bronchi divide to two secondary bronhi
both bronchi have same diameter
there is an increase in the amount of cartilage in the successive bronchi
bronchi have incomplete rings of cartilage
bronchi have incomplete rings of cartilage
which one of the following does not take place during inhalation?
intercostal muscles contract
diaphragm contracts
sternum moves upwards and outwards
air pressure in the lungs increases
air pressure in the lungs increases
which one of the ring-shaped cartilage just inferior to the thyroid cartilage
epiglottis
cricoid
corniculate
cuneiform
cricoid
what is the volume of air that moves into the respiratory system during a single respiratory cycle?
residual volume
expiratory reserve volume
tidal volume
inspiratory reserve volume
tidal volume
air moves out of the lungs when the pressure inside the lungs is
greater than intra-alveolar pressure
less than the pressure in the atmosphere
less that intra-pulmonic pressure
greater than the pressure in the atmosphere
greater than the pressure in the atmosphere
which of the following statements is true?
air moves from area of lower pressure to area of higher pressure
if barometric air pressure is greater than alveolar pressure, than air flows into the alveoli
at the end of inspiration intra-alveolar pressure is not equal to barometric air pressure
during expiration, air flows out of the lungs because intra-alveolar pressure is less than barometric air pressure
if barometric air pressure is greater than alveolar pressure, than air flows into the alveoli
what is the relationship between the intrapulmonary and atmospheric pressure when there is no air movement?
intrapulmonary pressure is greater than atmospheric pressure
atmospheric pressure is less than intrapulmonary pressure
atmospheric pressure is more than intrapulmonary pressure
they are equal
they are equal
a patient has a respiratory rate of 12 breaths per minute and a tidal volume of 600mL. The dead space volume is 150 mL. which one of the following is the respiratory minute volume?
5400 mL
7200 mL
6750 mL
1800 mL
7200 mL
