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Home Q & A Board Science-Related Homework Help Psychology
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Kiaalyce1 Kiaalyce1
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6 years ago
A scan shows that a particular substance has spread throughout the body via the bloodstream but has not entered the brain. This finding demonstrates the existence of:
 
  a. the blood-brain barrier.
  b. the doctrine of specific nerve energies.
  c. blood efficacy.
  d. medicine effects.
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estiee3estiee3
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6 years ago
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Kiaalyce1 Author
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6 years ago
You make an excellent tutor!
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This helped my grade so much Perfect
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Helped a lot
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