Respiratory System MCQ - Multiple Choice Question and Answer

Respiratory System MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 8
Emphysema is a respiratory disease in which

the larynx is closed

the trachea gets narrowed

the gas exchange area of lungs is increased

the gas exchange area of lungs is decreased

Question No : 9
The oxygen pressure in the alveolar air is

less than that is lung capillaries

equal to that in lung capillaries

double of that in lung capillaries

half of that in lung capillaries

Question No : 10
In all vertebrates, the oxygen transport is through

haemocyanin

haemoglobin

myoglobin

haemoerythrin

Question No : 11
The regulatory centre for respiration is situated in the

cerebral cortex

hypothalamus

medulla oblongata

procencephalon

Question No : 12
Colour of oxyhaemoglobin is

dull red

bluish red

bright red

dull brown

Question No : 13
The rate of respiration is lowest at

sleeping

running

eating food

playing

Question No : 14
The functional unit of the lung is

neuron

alveolus

bronchus

none of these