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17. The atria contracts a. just before diastole b. during diastole c. right after systole d. during systole

17. The atria contracts a. just before diastole b. during diastole c. right after systole d. during systole

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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17. The atria contracts a. just before diastole b. during diastole c. right after systole d. during systole 18. Which statement is true about transport in plants? a. Water is transported by the xylem in upward and downward directions. b. Sugars manufactured in the leaves are transported through the phloem by tension cohesion mechanism. c. Sugars always move from source to sink, in an upward direction. d. Sugars always move from sink to source, in a downward direction. e. Sugars are transported from source to sink, in any direction. 19. A rhythmic beating of cardiac muscle in a mammalian heart is initiated by the a. Atrioventricular node b. Purkinje fibers c. Parasympathetic nervous system d. Sinoatrial node
Transcribed Image Text:17. The atria contracts a. just before diastole b. during diastole c. right after systole d. during systole 18. Which statement is true about transport in plants? a. Water is transported by the xylem in upward and downward directions. b. Sugars manufactured in the leaves are transported through the phloem by tension cohesion mechanism. c. Sugars always move from source to sink, in an upward direction. d. Sugars always move from sink to source, in a downward direction. e. Sugars are transported from source to sink, in any direction. 19. A rhythmic beating of cardiac muscle in a mammalian heart is initiated by the a. Atrioventricular node b. Purkinje fibers c. Parasympathetic nervous system d. Sinoatrial node
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