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Q: The endocrine system acts through chemical messengers called ________. A. Tissue B. Blood cells C. Neurotransmitters D. Hormones
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User: The endocrine system acts through chemical messengers called ________. A. Tissue B. Blood cells C. Neurotransmitters D. Hormones

User: The endocrine system acts through chemical messengers called ________.

User: ________ in the pancreatic islets secrete the hormone insulin in response to a high concentration of glucose in the blood.

User: ________ in the pancreatic islets secrete the hormone insulin in response to a high concentration of glucose in the blood. A. Beta cells B. Alpha cells C. Gamma cells D. Sigma cells

User: Exocrine glands ________. A. Do not have ducts to carry their product to a surface B. Do not have ducts to retain their product below surface C. Have ducts that carry their secretory product to a surface D. Have ducts to retain their secretory product below surface

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Asked 4/28/2012 2:25:02 PM
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An instrument called a ________ is used to measure the volume of air that moves into and out of the lungs.
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Updated 7/28/2015 12:26:40 AM
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An instrument called a SPIROMETER used to measure the volume of air that moves into and out of the lungs.

Added 7/28/2015 12:26:40 AM
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