Lab #7 - Respiratory System
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29 Terms
Nasal conchae are also known as…
Nasal Turbinates
Nasal Conchae/Turbinates Definition
Thin, scroll shaped bony elements forming the upper chambers of the nasal cavities.
Nasal Conchae/Turbinates Function
Increase the surface area of the upper chambers of the nasal cavities, providing rapid warming, humidification, & turbulence of air as it passes to the lungs.
Sinus Definition
Air filled extensions of the respiratory part of the nasal cavity.
Sinus Function
Humidify inspired air and reduce the weight of the skull.
Ventilation
Breathing
External Respiration
Gas exchange at the lungs
Internal Respiration
Gas exchange between capillary beds and body tissues
Larynx Function
Protects the glottis and produces sounds.
Alveoli are…
The site of gas exchange
What is the histology of the upper respiratory structures?
Pseudostratified columnar epithelium
What is the histology of the trachea?
Pseudostratified columnar epithelium
What is the histology of bronchioles?
Transitions from simple columnar to cuboidal in smaller bronchioles.
What is the histology of alveoli?
Delicate simple squamous epithelium.
How many lobes do the lungs have?
5 - 3 right lobes and 2 left lobes
What are the lungs enclosed in?
Pleura
Pleura
A pair of layered serous membranes.
Typical/Average Inspiratory Reserve Volume (IRV)
M - 3,100 ml ; F - 1,900 ml
Typical/Average Tidal Volume (TV)
M - 500 ml ; F - 500 ml
Typical/Average Expiratory Reserve Volume (ERV)
M - 1,200 ml ; F - 700 ml
Typical/Average Residual Volume (RV)
M - 1,200 ml ; F - 1,100
Typical/Average Total Lung Capacity
M - 6,000 ml ; F - 4,200 ml
Tidal Volume (TV)
The amount of air that moves in or out of the lungs with each respiratory cycle.
Inspiratory Reserve Volume (IRV)
The extra volume of air that can be inspired with maximal effort after reaching the end of a normal, quiet inspiration.
Expiratory Reserve Volume (ERV)
The extra volume of air that can be expired with maximum effort beyond the level reached at the end of a normal, quiet expiration.
Residual Volume (RV)
The air that remains in the lungs after maximum forceful expiration.
Lung Capacity
The volume of air in the lungs upon the maximum effort of inspiration.
Formula for vital capacity
VC = TV + IRV + ERV
What is #1 in this image?