Gas Exchange Flashcards
Antecedents
Adequate perfusion, cardiorespiratory, neurological receptors in thoracic, brain and heart, functioning of the cellular metabolism , respiratory centers such as brain and chemoreceptor spinal
Perfusion
sufficient oxygen exchange from blood to lungs and distributes throughout the body
Optimal diffusion
This includes partial pressure of ok oxygen and carbon dioxide, solubility of gases since carbon can pass through easier than ox then it will diffuse faster, membrane permeability between oxygen alveoli membranes
Optimal ventilation :
This includes the ability of the respiratory centers wto maintain and respond to lung and brain and chemoreceptors
What are the environmental risk?
Air quality , lack of vaccination, jobs with inhalants, pollution
VQ mismatch
This means that lungs are perfumed but not ventilated so this is exaplined as lungs recieing the oxygen from the blood but are not distributing it while no perfusion and ventilation occurs is the opposite where the blood, such as where lungs are ready to disperse the oxygen but blood has no oxygen
Aerobic means that there is
Oxy in carbon out
Anaerobic
No oxygen so an increase of carbon and leads to lactic acid as s waste
Long term manifestation include:
Barrel breathing, tripod positioning , dyspnea when exertion or talking, pallor of lips , clubbing of the fingers
Short term ?
Solmulence
Antecents Diffusion
Oxygen and carbon dioxide are exchanged at alveolar
capillary junctions
Two major process occur:
Oxygen is trying to get to all the cells.
Carbon dioxide is trying to escape through lungs.
Effectiveness depends on:
Partial pressure and solubility of gas
Thickness, surface areas of membranes
Antecedents Ventilation
Accessory muscles sternocleidomastoid, intercostal, diaphragm
Involves both acquiring oxygen
(inspiration) and removing
carbon dioxide (expiration) from
the blood
Neuronal impulses are directed
by lung receptors, which map
the current state of breathing
and lung function
