Microorganisms inhaled into the airways are most likely to be destroyed by:
A. antibodies in respiratory mucus.
B. the cilia whipping them to death.
C. digestion by gastric juice.
D. surfactant.
Ans: C. digestion by gastric juice.
You might also like to view...
Passive aging is
A. decay of tissues. B. a result of a person being much less active in later years. C. a buildup of structures and speeding of functions. D. a breakdown of structures and slowing of functions.
A clot that forms and remains in an unbroken blood vessel is a(n)
A. thrombus. B. plasmin. C. embolus. D. stem cell.
Describe the negative feedback loop that controls the rate of erythropoiesis. Under what circumstances would you expect the rate of erythropoiesis to increase? How would it be possible to tell if the rate of erythropoiesis is elevated?
What will be an ideal response
Which of the following is not a factor that helps create the stomach mucosal barrier?
A) replacing of damaged epithelial mucosa cells B) thick coating of bicarbonate-rich mucus C) secretion of pepsinogen D) tight junctions of epithelial mucosa cells