Urine is excreted from each kidney through the kidney ____
a. urethra
b. capillary
c. ureter
d. cortex
c
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The function of the surfactant in the lung is to help:
a. reduce the surface tension of water in the alveoli b. trap bacteria and dust c. move bacteria and dust toward the pharynx d. both B and C above
The pseudostratified columnar epithelium of the bronchi in smokers may transform into stratified squamous epithelium. This is an example of ________.
A. regeneration B. differentiation C. hyperplasia D. atrophy E. replacement
The sciatic nerve is actually two nerves combined within the same sheath. The two nerves are the
A) femoral and obturator. B) femoral and gluteal. C) common fibular (peroneal) and tibial. D) common fibular (peroneal) and obturator. E) tibial and gluteal.
A myofibril is the
A. cell membrane of a muscle fiber. B. cytoplasm of muscle cells. C. structural and functional unit of the skeletal muscle cell. D. contractile thread that extends the length of the muscle fiber. E. protein strand composed of actin.