Anatomy Lab Quiz 4 Flashcards
(72 cards)
The various amounts of air that can be inhaled and exhaled during different stages of breathing
Respiratory volumes
What are 2 purposes of using respiratory volumes?
- Determine the overall health and function of the lungs
- Diagnose and treat respiratory conditions
In obstructive lung diseases such as chronic obstructive pulmonary disorder (COPD) ….
What does this cause over time?
Obstruction of the lungs causes air to be “trapped” in the lungs when it cannot be exhaled
- Causes hyperinflation of lung tissue over time
In restrictive lung diseases…
What happens then?
There is a loss of compliance, or elasticity, in the lung tissue.
- Less air is brought into the lung tissue because the lungs are “stiffer”
The sum of two or more lung volumes that reflect different aspects of lung function
Respiratory capacities
How many lung volumes and respiratory capacities are there? What are they used for?
- 4 each
Used to indicate lung health and function
The amount of air inhaled or exhaled on a normal breath
Tidal Volume (TV)
The additional air that can be forcefully inhaled past a normal tidal volume inspiration
Inspiratory reserve volume (IRV)
The additional air that can be forcefully exhaled past a normal tidal volume expiration
Expiratory reserve volume (ERV)
The volume of air remaining in the lungs following a maximal exhalation
Reserve/Reserve volume (RV)
The total amount of air that can be forcefully expired after a maximum inhalation
Vital Capacity (VC)
What is the formula for Vital Capacity
VC = TV+ IRV +ERV
The maximum amount of air that can be inspired after a normal expiration
Inspiratory capacity (IC)
What is the formula for Inspiratory capacity
IC = TV + IRV
The total amount of air remaining in the lungs after a normal exhalation
Functional residual capacity (FRC)
What is the formula for functional residual capacity (FRC)
FRC= RV + ERV
The total amount of air the lungs can contain
Total lung capacity (TLC)
What is the formula for total lung capacity?
TLC= TV+IRV+ERV+RV
The average respiratory volume for females is… Why?
20-25% less than males
- This is because females typically have smaller body size and smaller lungs
A medical test used to measure the four lung volumes, and used to indicate abnormalities in lung function
Spirometry
Common diagnostic tool used to help diagnose various lung diseases and conditions that are obstructive or restrictive in nature
Spirometer
What are 3 examples of lung diseases/conditions that are obstructive or restrictive in nature
Asthma, COPD, pulmonary fibrosis
What is the formula for Respiratory minute volume (L/min)?
Respiratory minute volume (L/min)= Tidal Volume (mL) x Respiratory Rate (breaths/min)
A diagram that represents relations between three or more variable quantities with the use of numbered scales
- What is predicted with this?
Nomogram
- Predicts vital capacity