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How is the mammalian trachea supported? A) By rings of cartilage B)By the ribs C)By the pressure of air entering it D)By the intercostal muscles
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How is the mammalian trachea supported? A) By rings of cartilage B)By the ribs C)By the pressure of air entering it D)By the intercostal muscles

User Namenlos
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The mammalian trachea is made of soft tissue and cartilage that provides extra support and strength to keep the passage open in this structure. Therefore, the correct alternative is A. by rings of cartilage.

User Alleyne
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