Respiratory Physiology 2 Flashcards
What are the major inspiratory muscles?
Diaphragm
Intercostal muscles
What are the accessory muscles of inspiration?
Scalenus
Pectoral
Sternocleidomastoid
Parasympathetic stimulation causes bronchodilation and occurs when the body is active. True/False
False
Parasympathetic stimulation occurs when body is at rest and results in bronchoconstriction.
What is pulmonary compliance?
The effort that goes into stretching or contracting the lungs.
What does low pulmonary compliance mean?
Indicates stiff lungs, meaning more work is required to inflate them.
What does high pulmonary compliance mean?
Indicates lungs with low elastic recoil (lungs rebound after being stretched out by inflation).
What are the accessory muscles of expiration?
Abdominal muscles
Internal and external Intercostals
Internal and external obliques
What are the major expiratory muscles?
Abdominal muscles
Internal and external intercostals
What else is responsible for allowing expiration to occur?
Surface tension
Elastic recoil of lungs due to elastic connective tissue
Airway flow can be measured by dividing the change in ______ by the _______ of the airway.
pressure
resistance
What does a low FEV 1/FVC ratio indicate?
Trapped air within the lungs.
The ___ ____ test requires patients to exhale into a tube to measure their ______ _______ _____
peak flow
peak expiratory flow
What causes a low pulmonary compliance?
Factors such as pulmonary fibrosis, pulmonary oedema and pneumonia.
What causes a high pulmonary compliance?
Low elastic recoil of the lungs.
