A 65-year-old female with a smoking history of 2 packs/day for 30 years has been diagnosed with chronic obstructive lung disease. She most likely has increased mucus viscosity due to:
A. bronchoconstriction
B. stimulation of parasympathetic fibers in bronchial glands
C. stimulation of the sympathetic nerves
D. abnormal breathing pattern
E. stimulation of smooth muscles
ANS: B
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The diffusion of water through a semi-permeable membrane is called __________.
Fill in the blank(s) with the appropriate word(s).
Platyhelminthes can live without a circulatory or respiratory system because
A) They rely on their digestive system. B) They are dorsoventrally flattened. C) The kidney excretes excess waste materials. D) The epidermis secretes lubricants.
Which bones form the calvaria?
A. Occipital and parietals B. Parietals and frontal C. Occipital, parietals, and temporals D. Occipital, parietals, and frontal E. Occipital, parietals, temporals, and frontal
Eicosanoids are synthesized from
A. cholesterol. B. prostaglandin. C. arachidonic acid. D. amino acids.