Which of the following statements about the terminal bronchioles is true?

(Answer to Q. 1)  ANS: B
Terminal bronchioles are the smallest conducting airways and function to supply gas to the res-piratory zone of the lung.

(Answer to Q. 2)  ANS: D
With loss of consciousness, the head flexes forward, which can partially or completely obstruct the upper airway (Figure 9-41, A). Extension of the head and lower jaw into the sniff position alleviates this obstruction (Figure 9-41, C). Extension of the head moves the tongue away from the rear of the pharynx. This technique is used to maintain the airway in unconscious patients and facilitates placement of artificial airways.

(Answer to Q. 3)  ANS: D
The base of the tongue is attached to the epiglottis by three-folds. These folds form a space be-tween the tongue and the epiglottis called the vallecula, which is a key landmark in oral intuba-tion (Figure 9-36).

(Answer to Q. 4)  ANS: B
The opening formed between the vocal cords is called the glottis.

(Answer to Q. 5)  ANS: A
The laryngeal component of speech is called phonation. It requires the adjustment of vocal cord tension and position relative to one another. The action of the posterior cricoarytenoid muscles causes the arytenoid cartilages to rotate and opens the vocal cords. Closure of the vocal cords is carried out by rotating the arytenoids in the opposite direction through the action of the lateral cricoarytenoid and oblique arytenoid muscles.

(Answer to Q. 6)  ANS: D
Tight closure of the larynx and the buildup of intrapulmonary pressure through muscular effort is called effort closure. Effort closure of the larynx is necessary for generating loud sounds and for effective coughing and sneezing.

Thank you so much for the answer