The text appears to be a multiple-choice question:**Question:**The exchange of gases in our lungs is through**Options:**- Osmosis- Phagocytosis- Diffusion- Adhesion- Circumfusion(No graphs or diagrams are present in the image.)

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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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The exchange of oxygen and carbon dioxide occurs in very tiny air sacs called alveoli. Alveolar walls include CAPILLARIES, which are blood vessels. The pulmonary artery and pulmonary vein both serve as entry points and exit points for blood as it travels through the capillaries. The flow of solutes (gas or ions) from a region of high concentration to an area of low concentration is known as passive or simple diffusion. Gases permeate between the target tissue's cell membranes and the systemic capillary membrane. As oxygen diffuses from lungs to systemic tissues, carbon dioxide diffuses from systemic tissues to lungs.

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