Breathing and exchange of gases, Quiz1

In which of the following gaseous exchange between O₂ and CO₂ occurs through general body surface?

• Sponges

• Coelenterates

• Flatworms

• All

• A - IV, B and C - III, D - I, E - II

• A - IV, B - III, C and D - I, E - III

• A - II, B and C - III, D - I, E - IV

• A - III, B and C - I, D - II, E - IV

Which is the correct sequence of air passages in man?

Which of the following options is wrong about the larynx (sound box)

• It is a bony box

• Glottis is the opening into the larynx

• During swallowing of food glottis is covered by epiglottis to prevent food entry into the larynx

• All

Amphibians e.g. frogs respire –

• (a) Through moist skin

• (b) Lungs

• (c) Both (a) and (b)

• (d) Trachea

Trachea divides into right and left primary bronchi at _____th thoracic vertebra.

• 4

• 5

• 6

• 9

Incomplete cartilaginous rings support all of the following except –

• Trachea

• Primary, secondary and tertiary bronchi

• Respiratory bronchioles

• Initial bronchioles

Which of the following has the smallest diameter?

• Trachea

• Terminal bronchiole

• Tertiary bronchus

• Secondary bronchus