extensions of a neuron through which impulses are sent away from the cell body to other neurons, glands or muscles
A. nerve fibers
B. efferent nerves
C. axon, axon terminal
D. reflex
Select your answer:
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Parts of the Skin › ViewHow many layers of skin do we have?
A. 2
B. 3
C. 1
Bacterial Resistance and Biotechnology › View
Staph infections, caused by the bacterium Staphylococcus aureus, are increasing in frequency and are more difficult to treat with antibiotics. Many staph infections are now caused by MRSA, and methicillin-resistant strain of S. aureus. What explains the more widespread phenomenon of MRSA prevalence in staph infections?
A. Vaccines became less effective because of the changes in the human immune system
B. Antibiotics caused mutations in the bacteria
C. hospitals decreased their sanitation practices
D. Resistant bacteria already existed from random mutations and the excessive use of antibiotics increased the frequency of the resistant strain