Respiratory tract in birds includes

Nares, nasal sacs, glottis, larynx, trachea, syrinx

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Nares, glottis, larynx, trachea

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Nares, lungs, trachea

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Lungs, spiracies, trachea

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Solution

The correct option is A Nares, nasal sacs, glottis, larynx, trachea, syrinx
The respiratory tract of bird includes nares, nasal sacs, glottis, larynx, trachea and syrinx. External nares are present below the upper beak. It opens into nasal sacs. Glottis lies behind the base of tongue. It opens into trachea. Larynx is present on the anterior end of the trachea. Trachea is a long tube running backside of neck. It expands into syrinx in thoracic cavity and divides into two bronchi. Syrinx is the vocal organ found in birds. It is present between trachea and two bronchi.
Thus, the correct answer is option A.

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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

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) $N o s t r i l s \to p h a r y n x \to l a r y n x \to t r a c h e a \to a l v e o l i$

Question 16
During respiration exchange of gases take place in

(a) trachea and larynx
(b) alveoli of lungs
(c) alveoli and throat
(d) throat and larynx

Q. Air is exchanged in which part of the human respiratory system?

(a) Trachea
(b) Bronchi
(c) Alveoli
(d) Larynx

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