Answered: 1. In response to starting rigorous…

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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1. In response to starting rigorous physical activity, propriorecetors stimulate the cardioacceratory center to increase Heart Rate. In addition, contraction of skeletal muscles increase the amount of blood returning to the heart which in turn

A.decreases preload and therefore increases Stroke Volume

B.increases afterload and therefore decreases Stroke Volume

C.decreases afterload and therefore increases Stroke Volume

D.increases preload and therefore increases Stroke Volume

2. Congestive Heart Failure occurs as a result of

A.negative feedback

B.positive feedback

C.really bad luck

D.homeostatic regulation

3. Imbalanced ventricular output inevitably results in a progressive disease known as

A.Myocardial Infarction

B.Congestive Heart Failure

C.Heart Disease

D.Angina Pectoris

4. In ventricular fibrillation, there is no pattern visible in the EKG. What does this mean in terms of contraction?

A. contraction will have no visible pattern either and the ventricles will be unable to eject much blood

B. the pattern doesn't matter; contraction of the ventricles will not be affected as long as ventricular myocytes continue to depolarize and depolarize

C. the ventricular myocytes will be unable to contract

C. contraction will become constant and ventricles will be unable to fill with blood

5. Which structure follows depolarization of the SA Node and atria in the cardiac conduction system?

A.ventricular myocytes

B.AV Node

C.left and right bundle branches

D.AV bundle

E Purkinje fibers