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anastassius [24]
3 years ago
12

The C-shaped tracheal cartilages allow the trachea to ______ (close/open), whereas the trachealis muscle allows the trachea ____

_______ (close/open)
Biology
1 answer:
uysha [10]3 years ago
8 0

Answer:

open, close

Explanation:

The trachea is cartilaginous tube which connects pharynx and larynx to lungs and thus allowing passage of air.

C-shaped cartilages are open at area where trachea is nearest esophagus, which leads from throat to stomach. <u>It reinforces anterior and lateral sides of trachea to maintain airway open.</u>

The trachealis muscle bridges gap between free ends of the C-shaped cartilages at posterior border of trachea and is adjacent to esophagus. <u>The primary function of trachealis muscle is to constrict trachea, allowing the air to be expelled with more force during coughing. </u>

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