the motor end-plate
It is called the neuromuscular junction.
the axon terminal coming into close proximity to a muscle fiber
Some words with the prefix "juxta" include juxtapose, juxtaposition, and juxtaglomerular.
the close arrangement of two elements to enhance descriptions.
Juxtaposition and unclear directions are introduced when selection keys are too close to each other on the screen. Unintended consequences happen from selecting the wrong key.
there are several hotels within a stone's throw to the terminal
A juxtaposition is placing two opposing things close together to emphasize their differences. An example of juxtaposition is the opening lines of "A Tale of Two Cities" by Charles Dickens: "it was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness".
The heart is a organ-muscle that is about the same size of your fist.
sphincter
masseter
The adductor Muscle
the orbicularis oris muscle