★ Nervous System Quiz
How many neurons make up the brain?
A. 1 million
B. 100 million
C. 1 billion
D. 100 billion
E. 1 trillion
Select your answer:

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Diseases & Disorders › ViewThe hormone that regulates blood sugar levels is:
A. Glucosamine
B. Glucose
C. Insulin
D. Pheromone
EKG Medical Term › View
telemery is a term that refers to
A. immediately
B. transmitting EKG signals via radio waves
C. coming from a focus outside the normal
D. atrail fibrillation