Dead space air in man is

• 500 ml

• 150 ml

• 250 ml

• 1.5 L

The faster breathing in high fever is due to the

• Additional requirement of O₂ for the invader germs

• High temperature of the body

• Mental worry of a patient

• Loss of appetite

Which of the following animals possess non-elastic lungs with elastic air sacs connected to them?

• Reptiles

• Birds

• Amphibians

• Mammals

Carotid labyrinth contains

• Olfactory receptors

• Baroreceptors

• Chemoreceptors

• Phonoreceptors

Haldane effect refers to

• More acidity in the blood

• Less acidity in the blood

• More basicity in the blood

• Less basicity in the blood

The exchange of gases in the alveoli of the lungs takes place by

• Osmosis

• Simple diffusion

• Passive transport

• Active transport

Which of the following is a respiratory disease?

• Polio

• Arthritis

• Asthma

• Cancer

From which of the following plant is a medicine for respiratory disorders obtained?

• Ephedra

• Eucalyptus

• Cannabis

• Saccharum

During inspiration, the diaphragm

• expands

• shows no change

• contracts and flattens

• relaxes to become dome- shaped

After a deep inspiration and maximum expiration, the capacity of lungs is known as

• vital capacity

• tidal volume

• IRV

• ERV