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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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Questions asked by the same visitor
An instrument called a ________ is used to measure the volume of air that moves into and out of the lungs.
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Expert Answered
Updated 7/28/2015 12:26:40 AM
1 Answer/Comment

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
This answer has been confirmed as correct, not copied, and helpful.
The ________is about the size of a walnut and encircles the urethra as it leaves the urinary bladder. User: Hormones are very ________ substances. A. Weak B. Potent C. Neutral D. All of the above
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Not Answered
Updated 339 days ago|6/19/2016 4:59:25 PM
2 Answers/Comments
The Prostate gland is about the size of a walnut and encircles the urethra as it leaves the urinary bladder.

Added 339 days ago|6/19/2016 4:59:22 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Janet17 [6/19/2016 5:02:13 PM]
Hormones are very potent substances.
Added 339 days ago|6/19/2016 4:59:25 PM
This answer has been confirmed as correct, not copied, and helpful.
Confirmed by Janet17 [6/19/2016 5:02:13 PM]
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