Which of the following moves toward the central nervous system?
afferent neuron
efferent neuron
proximal neuron
distal neuron
very confused! would be appreciated

answer; /// i believe the correct answer is (thrombocytopenia); (a)

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.