Question

1A. Select the grouping in which all terms belong together:

a.) CNS: oligodendroglia, nerve tract, nuclei

b.) amphioxus: ventral nerves, laterally symmetrical nerves, ganglia, plexes

c.) motor neuron: unipolar, short axon. exteroceptor

d.) lamprey: fused dorsal and ventral spiral nerve roots, dorsal root all sensory neurons, ventral root all motor neurons

e.) graded potential: all-or-none, axon, constant magnitude

1B. When you come under stress, perhaps due to deadline and exams, which of the following is NOT initially involved?

a.) neuronal stimulation of digestion

b.) the sympathetic nervous system

c.) thoracolumbar outflow

d.) long preganglionic fibers

e.) release of blood cells

Answer 1