Go through the following statements (i) the peripheral chemoreceptors for regulation of respiration are located in carotid veins and arch of aorta
(ii) the primary effect of penumotaxic centre is to control the switch off point of inspiratory signal and thus limit inspiraton
(iii) the chemosensitve area fo brain for respiratory control is highly sensitive to `O_(2)` concentration
(iv) i case of feital haemoglobin the oxygen haemoglobin dissociation curve is shifted toward left ltrbgt which of these ar correct ?

Options

A. I , ii & iv
B. ii and iv
C. ii , iii & iv
D. iii and iv

Answer

B

Explanation

The peripheral chemoreceptors are located in carotid arteries and arch of aorta .The chemosensitive area is highly sensitive to `CO_(2)` and `H^(+)`