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What is the first activity of the digestive system? A. Digestion B. Ingestion C. Movement D. Absorption
Ingestion is the first activity of the digestive system.
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Asked 1/14/2013 1:19:41 PM
Updated 9/8/2016 1:21:25 PM
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This answer has been confirmed as correct and helpful.
Edited by Andrew. [9/8/2016 1:21:24 PM], Confirmed by Andrew. [9/8/2016 1:21:25 PM]
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Blood is considered to be ________. A. Alive B. Lifeless C. Unconscious D. None of the above
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Every ________, nerve impulses stimulate the breathing process, or ventilation, which moves air through a series of passages into and out of the lungs. A. 5 to 7 seconds B. 3 to 5 seconds C. 1 to 3 seconds D. 7 to 9 seconds
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1 Answer/Comment
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Added 9/8/2016 1:22:31 PM
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The spinal cord serves as a conduction pathway for impulses going to and from the ________. A. Lungs B. Liver C. Brain D. Heart
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Veins carry blood ________ the heart. A. Away from B. Towards C. Neither of the above D. All of the above
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Updated 6/28/2015 10:41:24 AM
1 Answer/Comment
Veins carry blood towards the heart.

Added 6/28/2015 10:41:24 AM
This answer has been confirmed as correct and helpful.
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