Which of the following comprises the lungs?
a. Tracheae, b. `1^(@)"bronchi, c. "2^(@)" bronchi, d. "3^(@)` bronchi, e. initial bronchioles, f. terminal bronchioles, g. duct of alveoli, h. alveoli

Draw a well-labelled diagram showing trachea, bronchi, bronchioles and alveoli.

Arrange the following organs in the correct order to show the path of air in human body. Trachea, Bronchi, Alveoli, Nose, Bronchioles

The _______ lack ca rtilaginous r ings. (i) Trachea " " (ii) Bronchi (iii) Bronchioles " " (iv) Alveoli

(i) Mammals have negative pressure breathing. (ii) The impulses for voluntary breathing are sent by the medulla oblongata. (iii) The trachea, primary, secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings. (iv) The volume of air remaining in the lungs even after a forcible expiration is functional residual capacity. How many of the above statements are correct?

Which of the following statements about the human respiratory system are INCORRECT ? I. During swallowing , glottis can covered by a thin elastic cartilaginous flap called epiglottis to prevent the entry of food into the larynx. II. The trachea is a straight tube extending up to the mid- thoracic cavity, which divides at the level of the fourth thoracic vertebra into a right and left primary bronchi. III. The trachea , primary secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings made up of hyaline cartilage. IV. The respiratory part transports the atmospheric air to the alveoli, clear it from foreign particles, humidifies and also brings the air to body temperature.

(i) Tidal volume is 500 ml per min (ii) The respiratory rhythm centre lies in the medulla oblongata. (iii) The trachea, primary, secondary and tertiary bronchi, and initial bronchioles are supported by incomplete cartilaginous rings. (iv) The volume of air remaining in the lungs even after a forcible expiration is functional residual capacity. How many of the above statements are correct?

Which of these statements are fasle regarding the human respiratory regarding the human respiratory system ? (a) The nasal chamber opens into the pharynx . (b) Trachea, bronchus and initial bronchioles are supproted by complete cartilaginous rings. (c ) The branching network of bronchi, bronchioles and alveoli comprises the lungs. (d) Pleural fluid increase friction on the lung surface.

Which of these statements are fasle regarding the human respiratory regarding the human respiratory system ? (a) The nasal chamber opens into the pharynx . (b) Trachea, bronchus and initial bronchioles are supproted by complete cartilaginous rings. (c ) The branching network of bronchi, bronchioles and alveoli comprises the lungs. (d) Pleural fluid increase friction on the lung surface.