The most accepted current theory states that individuals with emphysema have a loss of elastic fibers due to proteases breaking them down. This causes the smaller airways, like small bronchioles and alveolar ducts, to collapse. This collapse leads to __________.
A. loss of air from the alveoli
B. trapping of air in the tertiary bronchi
C. trapping of air in the main stem bronchi
D. trapping of air the alveoli
Answer: D. trapping of air the alveoli
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Pulsations from which artery can be felt at the lower border of the mandible just anterior to the masseter muscle?
A. Superficial temporal B. Transverse facial C. External carotid D. Facial
Which tumor originates in connective tissue?
A. Carcinoma B. Lymphoma C. Sarcoma D. Leukemia
The insertion of a muscle is fixed.
Answer the following statement true (T) or false (F)
The primary kind of motility in the stomach during digestion of a meal is
A. regurgitation. B. segmentation. C. peristalsis. D. relaxation of the pyloric sphincter. E. mass movement.