Neurotransmitter between neuron and a muscle cell is

Give the technical terms used for the following: A juxtaposition between two neurons or between one neuron and a muscle fibre.

Assertion (A): Chemical messengers are chemicals that enable communication of message between two neurons or between neurons and muscles. Reason (R) : Chemicals enter the cell through receptor.

Junction between two neurons is called a _______while the junction between a neuron and a muscle fibre is called a _______

Junction between two neurons is called a .….......... while junction between a neuron and a muscle fibre is called a …………… .

Differentiate between nerve cell and muscle cell.