11 Questions
What is the normal intra-alveolar pressure during expiration?
Less than atmospheric pressure
What is the primary function of surfactant in the lungs?
Both (a) and (b)
Which type of hypoxia is caused by a deficiency of hemoglobin?
Anemic hypoxia
Which type of hypoxia is caused by the inhibition of the cytochrome system due to toxic agents?
Histotoxic hypoxia
What is the cause of stagnant hypoxia?
Inadequate blood flow to tissues
What are the cells responsible for gas exchange in the alveoli called?
Type I pneumocyte
Which of the following is NOT a function of the lungs?
Production of digestive enzymes
Which muscle is NOT involved in forced inspiration?
Diaphragm
Which nerve supplies the diaphragm, the main muscle involved in respiration?
Phrenic nerve
During expiration, which muscles are primarily responsible for decreasing thoracic volume?
Internal intercostal muscles
What type of process is inspiration?
Active process
Learn about the functional anatomy of the respiratory system, including the upper and lower respiratory tracts, and the cells of the alveoli for gas exchange. This quiz covers key concepts taught by Dr. Mohamed Talal in the field of dentistry physiology.
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