An action potential:
A. is essential for nerve impulse propagation
B. involves the influx of negative ions to depolarize the membrane
C. involves the outflux of negative ions to depolarize the membrane
D. involves the outflux of positive ions to depolarize the membrane
Select your answer:
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Properties of The Hair and Scalp › ViewHair receives its nourishment from the hair papilla which contains:
A. blood vessels
B. muscles
C. glands
D. fatty tissue
Microbiology › View
The Centers for Disease Control and Prevention mandates that some diseases must be reported, while it is not necessary for others. This is so that
A. statistics may be gathered for certain diseases.
B. high-risk epidemics can be identified and dealt with as quickly as possible.
C. disease trends and areas of outbreak can be monitored for certain diseases.
D. All of the above answers validate why it is important to report certain diseases to the CDC.