What structures prevent the backflow of blood from major arteries leaving the ventricles, back into ventricles? O Semilunar valves O Chordae tendinae Mediastinum Intercalated discs

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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What structures prevent the backflow of blood from major arteries leaving the ventricles, back into ventricles?
Semilunar valves
Chordae tendinae
Mediastinum
Intercalated discs
Transcribed Image Text:What structures prevent the backflow of blood from major arteries leaving the ventricles, back into ventricles? Semilunar valves Chordae tendinae Mediastinum Intercalated discs
Which of the following hormones increase heart rate?
Cortisol
ANP
Epinephrine
Thyroid hormones T3 and T4
Transcribed Image Text:Which of the following hormones increase heart rate? Cortisol ANP Epinephrine Thyroid hormones T3 and T4
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