Which of the following statements is/are true? a) Humoral input refers to afferent or efferent input to the respiratory centre from neurons that are
excited by means other than blood-born stimuli
uest
b) Central chemoreceptors are located in the medulla and are affected by changes in Ht of the
cerebrospinal fluid
c) Peripheral chemoreceptors are located in the carotid artery and respond to ingreases in blood
potassium levels
O a) only
Ob) and c)
ams
a), b) and c)
Ο Ο
None of the above
veys