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Watch Later 3:24

By: t0906, Views: 1386

Biological Concept-Ch.7 (5) - Respiratory system Pharynx

Watch Later 4:15

By: t0906, Views: 1500

Biological Concept-Ch.7 (6) - Respiratory system Trachea Bronchi Bronchioles

Watch Later 3:20

By: t0906, Views: 1491

Biological Concept-Ch.7 (7) - Respiratory system Air Sacs

Watch Later 5:13

By: t0906, Views: 1414

Biological Concept-Ch.7 (8) - The respiratory system Lungs

Watch Later 9:01

By: t0906, Views: 933

Biological Concept-Ch.7 (9) - The differences between inhaled gas and exhaled gas

Watch Later 4:58

By: t0906, Views: 2210

Biological Concept-Ch.7 (11) - Adaptive features of air sacs

Watch Later 3:06

By: t0906, Views: 1344

Biological Concept-Ch.7 (13) - Transport of respiratory gases

Watch Later 9:14

By: t0906, Views: 1334

Biological Concept-Ch.7 (14) - Transport of oxygen

Watch Later 7:45

By: t0906, Views: 1248

Biological Concept-Ch.7 (15) - Transport of carbon dioxide

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