1. Which is the correct sequence of the air passage in man?
a) Nasal cavity → pharynx → trachea → larynx → bronchi → bronchioles → alveoli
b) Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles → alveoli
c) Nasal cavity → larynx → pharynx → trachea → bronchi → bronchioles → alveoli
d) Nasal cavity → larynx → bronchi → pharynx → trachea → bronchioles → alveoli
Explanation: Nasal cavity → pharynx → larynx → trachea → bronchi → bronchioles → alveoli
2. In mammals, voice is produced by
a) Bronchus
b) Syrinx
c) Larynx
d) Inhalation and exhalation
Explanation: In mammals, voice is produced by Larynx.
3. Vocal cords occur in
a) Pharynx
b) Larynx
c) Glottis
d) Bronchial tube
Explanation: Vocal cords occur in Larynx.
4. Trachea divides into right and left primary bronchi at _________ the thoracic vertebra.
a) 4
b) 5
c) 6
d) 9
Explanation: 5
5.Opening of larynx into pharynx is guarded by
a) Syrinx
b) Epiglottis
c) Tracheal valves
d) All of these
Explanation: Opening of larynx into pharynx is guarded by epiglottis.
6. Glottis is a passage for
a) Food
b) air
c) Both (a) and (b)
d) None of these
Explanation: Glottis is a passage for air.
7. Glottis is an opening in the floor of
a) Mouth
b) Trachea
c) Pharynx
d) Diaphragm
Explanation: Pharynx
8. The Lungs are protected with the help of?
a) Ribs
b) Vertebral column
c) Sternum
d) All of these
Explanation: All of these
9.Which one has the smallest diameter?
a) Right bronchus
b) Left bronchus
c) Secondary bronchiole
d) Respiratory bronchiole
Explanation: Respiratory bronchiole
10.Lining of trachea is made of
a) Simple squamous epithelium
b) Simple cuboidal epithelium
c) Pseudostratified epithelium
d) Stratified cuboidal epithelium
Explanation: Lining of trachea is made of Pseudostratified epithelium.