Breathing and E...

Given below are   few respiratory disorders. Identify occupational respiratory disorders among these.
(i)    Coryza
(ii)   SARS
(iii)  Silicosis
(iv)  Asbestosis 
(v)   Emphysema

Receptors associated with aortic arch and carotid artery can recognise changes in __(i)__ and __(ii)__ concentration and send necessary signals to __(iii)__ for remedial actions.

Rate of breathing is controlled mainly by ________________.

The urge to inhale in humans results from 

Although much $$CO_{2}$$ is carried in blood, yet blood does not become acidic, because

During rest, the metabolic needs of the body are at their minimum. Which of the following is indicative of this situation?

Read the following four statements carefully.
(i) Ventral respiratory group of neurons of medulla oblongata can cause both inspiration and expiration. 
(ii) The part of the respiratory system starting with the external nostrils up to the terminal bronchioles constitutes the respiratory or exchange part of the respiratory system. 
(iii)  During swallowing epiglottis can be covered by a thin elastic cartilaginous flap called glottis to prevent the entry of food into the larynx.
(iv)  Binding of oxygen with haemoglobin is primarily related to partial pressure of $$O_{2}$$. 
Which of the above two statements are correct? 

During winter a person died during sleep, the room was closed and a container with burnt charcoal was found in the room. What may be the possible reason of his death?

The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen approximately by