Blood Reaches the Brain by Two Routes: Through the ________

question 78

Multiple Choice

Blood reaches the brain by two routes: through the ________ and the ________ arteries.

• A) internal; external carotid
• B) internal carotid; vertebral
• C) external carotid; vertebral
• D) posterior; anterior cerebral
• E) anterior; posterior communicating

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Definitions:

Level Of Significance

The probability of rejecting the null hypothesis in a statistical test when it is actually true; a threshold for determining the statistical significance of a result.

P-Value

The p-value is a measure in statistics that helps determine the significance of results from a hypothesis test, indicating the probability of observing the results given that the null hypothesis is true.

Level Of Significance

A threshold or criterion for judging whether a statistical result is significant, commonly set at values like 0.05 or 0.01, indicating the risk of a Type I error.

Null Hypothesis

A default hypothesis that there is no significant difference or effect, tested against to determine the likelihood of the alternative hypothesis.