The correct order of air reaching from atmosphere to the lungs is through

External nares, larynx, trachea and air sac.

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Larynx, trachea, air sac and external nares.

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Trachea, air sac, external nares and larynx.

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Air sac, trachea, larynx and external nares.

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Solution

The correct option is C External nares, larynx, trachea and air sac.
Air enters the nostrils or external nares and passes through the nasopharynx, the oral pharynx and through the glottis into the trachea and then to the right and left bronchi, which branches and branches into bronchioles, each of which terminates in a cluster of alveoli or air sacs.
So, the correct answer is option A.

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Similar questions

Q. Arrange the following parts of the human respiratory tract in the same order in which air flows during expiration:
Nasal chamber, pharynx, larynx, internal nares, trachea, lungs

Q. Arrange the following in correct order through which the air flows upto alveoli
Larynx, alveoli, trachea, pharynx, external nostrils, internal nostrils, nasal cavities.

Q. Match the columns and find the correct combination.

	I		II
(a)	Larynx	(p)	Lid of larynx
(b)	Trachea	(q)	Air sacs
(c)	Alveoli	(r)	Voice box
(d)	Epiglottis	(s)	Wind pipe
		(t)	Common passage

Question 15
Which is the correct sequence of air passage during inhalation?

(a) $N o s t r i l s \to l a r y n x \to p h a r y n x \to t r a c h e a \to l u n g s$
(b) $N a s a l p a s s a g e \to t r a c h e a \to p h a r y n x \to l a r y n x \to a l v e o l i$
(c) $L a r y n x \to n o s t r i l s \to p h a r y n x \to l u n g s$
(d) $N o s t r i l s \to p h a r y n x \to l a r y n x \to t r a c h e a \to a l v e o l i$

Question 15
Which is the correct sequence of air passage during inhalation?

(a) $N o s t r i l s \to l a r y n x \to p h a r y n x \to t r a c h e a \to l u n g s$
(b) $N a s a l p a s s a g e \to t r a c h e a \to p h a r y n x \to l a r y n x \to a l v e o l i$
(c) $L a r y n x \to n o s t r i l s \to p h a r y n x \to l u n g s$
(d) $N o s t r i l s \to p h a r y n x \to l a r y n x \to t r a c h e a \to a l v e o l i$

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