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Breathing and Respiration



mcqs by everyone

Rate of breathing is controlled by


At higher CO2concentration.
oxygen dissociation curve of haemoglobin will


SARS is caused by variant of


Pleura is double membrane sac which


Amount of air inspired or expired during normal breathing is


Two fibro-elastic strands of larynx extend between


Protective respiratory blast is


What is incorrect


During transport of CO2 blood does not become acidic due to


Book lungs are respiratory structures of


Amount of CO 2 in expired air is about


Chloride shift is required for transport of


In which disease, due to flattening of tracheal vessels, alveoli are deprived of oxygen


A molecule of haemoglobin carries oxygen molecules


Which one is mismatch


Capacity of human lungs for air in a healthy person is


Forced deep breathing during rest for some time followed by temporary stoppage of breathing because of


Percentage of oxygen supplied by haemoglobin is


In a resting person, oxygen saturation of haemoglobin as blood leaves the tissue capillaries is


A person starts coughing suddenly while swallowing somefood.
It could be due to improper movement of


Vital capacity of lung is equal to


Oxygen haemoglobin dissociation curve shift to right on decrease of


Asthma may be attributed to :


Approximate normal composition of alveolar air is


The two organisms which breathe only through their moist skin are


At a given O2 concentration, dissociation of oxyhaemoglobin will increase if


Diffusion of oxygen in tissues of cockroach occurs through


respiratory centre is situated in


Which is correct


Enzyme essential for transport of CO2 as bicarbonate in blood is