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Which of the following are part of the upper respiratory system? (Select all that apply)

A.

Pharynx

B.

Nasal cavity

C.

Bronchial tree

D.

Larynx

E.

Trachea

Answer and Explanation

Correct Answer : A,B,D

A. Pharynx: The pharynx (throat) is part of the upper respiratory tract and functions as a passageway for both air and food.

B. Nasal cavity: The nasal cavity is the main entryway for inhaled air and is part of the upper respiratory system.

C. Bronchial tree: The bronchial tree is part of the lower respiratory system, beginning with the bronchi and branching into bronchioles.

D. Larynx: The larynx (voice box) is part of the upper respiratory system; it connects the pharynx to the trachea.

E. Trachea: The trachea (windpipe) is part of the lower respiratory system.


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Related Questions

Correct Answer is A

Explanation

A. Bronchi: The bronchi are the main airways that branch off from the trachea and enter each lung. Structure #8 is shown as the large branches that split into the lungs, consistent with the location and appearance of the bronchi.

B. Trachea: The trachea is the main airway above the bronchi, running down the neck before it splits into the left and right bronchi. It is likely labeled as #7 in the diagram.

C. Alveoli: Alveoli are microscopic air sacs at the end of the bronchioles where gas exchange occurs. They are not visibly distinct in this diagram and are located much further down the airway branches than where #8 is labeled.

D. Bronchioles: Bronchioles are the smaller branches that come off the bronchi and lead to the alveoli. They would be located deeper into the lung structure and are smaller than the bronchi seen at label #8.

Correct Answer is B

Explanation

A. Bronchioles-glottis-alveoli: This is not a correct sequence; air doesn't go from bronchioles to glottis.

B. Trachea-bronchi-bronchioles: This is the correct anatomical sequence of airflow.

C. Larynx-alveoli-carina: Carina comes before the alveoli and is part of the tracheal bifurcation.

D. Bronchi-trachea-alveoli: Air flows from trachea → bronchi → alveoli, not bronchi → trachea.

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