Respiratory During Exercise Flashcards
What is the primary purpose of the respiratory system
Maintain arterial blood gas homeostasis
What does the epiglottis do
Separates the upper and lower respiratory tracts
What are the lungs enclosed within
Within membranes called pleura.
How many airway generations are there
23
Where does gas exchange take place
Pulmonary gas exchange takes place across the pulmonary capillary
What are the 2 types of alveolar cell
Type 1: cover 95% of the internal surface of the alveolus and are critical for gas exchange
Type 2: release surfactant which lowers the surface tension of the alveolus
The volume of gas passing through a sheet is dependant upon:
1.surface area
2. Thickness
3.diffusion content
4.pressure gradient
Describe the mechanics of breathing
The mechanics of breathing is concerned with the movement of air in and out of the lungs by changes in pressure flow and volume
What happens during inspiration
The volume of the thoracic cavity increases as respiratory muscles contract
What does the bucket handle motion of the ribs cause
Increases the transverse diameter of the thorax during inspiration
What does the pump handle motion of the ribs increase
Increases the anteroposterior diameter of the thorax during inspiration
What is responsible for the majority of pulmonary ventilation
The diagpragm
During exercise the diagpragm is assisted by what:
Intercostal muscles, sternocleidomastoid, scalene and many others
What is OHMS law
Current= voltage/resistance, applied to breathing
What is poisellues law
Resistance is dependent upon length and radius of a tube.
Radius is is raised to the 4th power this major cause of airway resistance
