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What is Lesson 1 Human Breathing System about?

This document provides information about the human respiratory and circulatory systems. It describes the major parts of the respiratory system including the nose, nasal passages, pharynx, larynx, trachea, bronchi, bronchioles, lungs and alveoli. It explains how inhaling and exhaling works through the movement of the diaphragm and ribs. It also outlines the major parts of the circulatory system including the heart, arteries, veins and capillaries. It describes how oxygen is absorbed into the blood in the lun

Author

David Lawrence Garcia

Language

EN