An individual s venous return to the heart at this moment contains much less oxygen than it did yesterday at the same time of day. It s reasonable to suspect that compared to yesterday,     they have a lower heart rate at this

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. An individual s venous return to the heart at this moment contains much less oxygen than it did yesterday at the same time of day. It s reasonable to suspect that compared to yesterday,

       

    they have a lower heart rate at this moment

       

    they are in the sitting position at this moment

       

    they are exercising at this moment

       

    they have lower blood pressure at this moment

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Less oxygen in the venous blood means that oxygen has been extracted and is being used in the metabolic reactions inside the cells and tissues.

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