NEET Biology question

Which of the following statements is true regarding the human respiratory system?

(A)Tracheal rings are of hyaline cartilageCorrect
(B)Dorsal side of the thoracic chamber is formed by sternum
(C)Expiration occurs when there is negative pressure in the lungs
(D)Inspiration occurs when there is positive pressure in the lungs

Answer: (A)

Solution

The trachea is supported by C-shaped rings of hyaline cartilage (true), whereas the thoracic chamber's dorsal side is actually formed by the vertebral column (not the sternum, which forms the

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Question ID VK-119209