A. Identify receptor, control center and effector in the body. • Receptor:
• Control center:
• Effector:

b. Identify the body systems involved.

• Body systems:

c. Why is it an example of negative feedback?

Allow large amino acids through

the correct answer is: " ventricles " .

"recent advances in brain imaging have allowed clinicians to make scientifically useful comparisons in the relative size of the chambers in the brain that are filled with cerebrospinal fluid."

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these chambers are called ventricles .