All of the following are involved in the transmission of regulatory signals through the ECF ,except

USMLE USMLE 1
#1

All of the following are involved in the transmission of regulatory signals through the ECF ,except

a.Synaptic signals thorugh neurotransmitters

b.Endocrine signals through hormones

c.Direct contact through gap junctions

d.G protein coupled receptors

ans:c.Direct contact through gap junctions