When oxygen levels are low or absent, the cells revert to a process of:
A. aerobic metabolism.
B. anaerobic metabolism.
C. anaerobic anabolism.
D. aerobic catabolism.
Answer: B. anaerobic metabolism.
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The exposed part of a tooth is covered by:
a. enamel b. pulp c. connective tissue d. gingival tissue e. nerve root
Which of the following cartilaginous joints functions primarily in protection and shock absorption of the spinal column?
A) costochondral joint B) epiphyseal plate C) intervertebral disc D) pubic symphysis
Smokers are more susceptible to respiratory infections because
A. they congregate in small areas to smoke. B. the respiratory passages have too little mucus. C. their respiratory passages lose cilia, which would otherwise remove bacteria. D. their respiratory passages overproduce cilia, to which bacteria cling.
which muscles are located in the superficial anterior compartment of the arm? select all that apply.
a) flexor digitorum b) extensor digitorum c) extensor carpi radialis longus d) flexor carpi ulnaris e) flexor carpi radialis