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Human Anatomy and Physiology › ViewWhich one of the following statement is NOT correct regarding trachea
A. It usually lies posterior to the muscular esophagus
B. It splits into the right and left bronchi to supply air to the lungs
C. Opening to the trachea is covered by epiglottis
D. Tracheal rings are C-shaped
Cardiorespiratory System › View
Which two gases are exchanged in the lungs?
A. Oxygen & helium
B. Oxygen & ATP
C. Oxygen & carbon monoxide
D. Oxygen & carbon dioxide