Breathing Flashcards
What is external respiration?
Occurs when gases are exchanged between the pulmonary blood vessels and the alveoli
Where does external respiration occur and what is it known as?
Occurs in the lungs and is known as breathing/ventilation
What is internal respiration? And where does it occur?
Occurs when the blood exchanges gases with the body tissues and occurs throughout the body
What process precedes external respiration?
Ventilation
What muscles are involved in breathing and where are they located?
- Diaphragm (connected to the ribs)
- Intercostals ( between each rib of the rib cage)
Road map of what happens during inspiration?
Muscle contraction-> increase in size of lungs-> decrease in pressure within lungs-> air rushes in
Road map of what happens during expiration?
Muscles relaxation-> decrease in size of lungs-> increase in pressure within lungs-> air rushes out
What process happens when the diaphragm goes up and goes down?
When the diaphragm goes up it’s called expiration and when it goes down it’s called inhalation
What is tidal volume?
The amount of air that is exchanged by the lungs at rest
What is inspiratory reserve volume?
The additional amount it air that can be inhaled consciously
What is expiratory reserve volume?
The additional amount of air that can be exhaled consciously
What is residual volume?
The amount of air remaining in lungs after a forced exhalation
What is vital capacity?
Amount of air someone can consciously exchange with the environment
What is total lung capacity?
Vital capacity + residual volume
Where is the residual volume located the graph?
At the bottom rectangle
