Harry suffers from cystic fibrosis and frequently has periods where he can hardly breathe. The problem is the result of
A) constriction of the trachea.
B) laryngospasms that occur in response to a toxic substance produced by the epithelial cells.
C) inflammation of the bronchi.
D) collapse of one or both lungs.
E) thick secretions that exceed the ability of the mucus elevator to transport them.
E) thick secretions that exceed the ability of the mucus elevator to transport them.
You might also like to view...
In terms of structure and function, compare the type of epithelium lining the trachea, air sacs of the lungs, and the epidermis of the skin
What will be an ideal response
Describe the shape, content, and function of an erythrocyte
What will be an ideal response?
Each fascicle of a muscle is surrounded by ________.
A. epimysium B. sarcolemma C. endomysium D. perimysium
What is the role of myosin phosphatase?
A. To serve as an enzyme that removes phosphate from myosin B. To form shallow invaginations of the plasma membrane C. To aid in rapidly developing action potentials D. To maintain relatively constant tension for a period of time E. To function as the intracellular cytoskeleton