It will be come a terminal node. Normally we call terminal nodes leaf nodes because a leaf has no branches other than its parent.

This is called saltatory conduction.

an object connected?? if so, it can be called a node/ a DTE (Data Terminal Equipment)

Around 1978, a group of amateur radio operators, the Vancouver Amateur Digital Communication Group (VADCG) in British Columbia, Canada began experimenting with Packet radio using a Terminal node controller (TNC) developed by Doug Lockhart a former IBM engineer. The Federal Communications Commission approved the transmission of ASCII for Amateur radio in the United States in 1980, and AX.25 was born. It was considered standardized in 1984 with the release of the v2.0 specification.

Node.

A node describes any device that connects to the network.