(a(i))[2]
Using Table 6.1 as evidence, describe the effect of myelination on the speed of conduction of impulses in mammals.
(a(ii))[2]
Using Table 6.1 as evidence, describe the effect of axon diameter on the speed of conduction of impulses in amphibians.
(b)[3]
Explain how myelination changes the speed of conduction of impulses.
(c(i))[2]
Multiple sclerosis (MS) is an auto-immune condition of humans in which the immune system attacks the myelin sheaths which are then damaged. Suggest how the myelin sheaths may be attacked.
(c(ii))[2]
Explain why this damage causes less information to reach the brain from sensory receptors.