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★ Eye and Ear Quiz
Which part of the ear is the first to vibrate as sound enters?
A. cochlea
B. auditory nerve
C. eardrum
D. hair cells
Select your answer:
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Endocrine System › ViewInsulin and glucagon;
A. Are secreted by the beta cells of the islets of Langerhans
B. Elevate blood glucose
C. Are secreted in response to declining plasma levels of glucose
D. Are secreted by the pancreas and are concerned with the regulation of blood glucose
Blood Donation › View
Do blood donors get paid for giving blood?
A. Yes
B. No