The neuromuscular junction (NMJ) is the site of communication between motor nerve axons and muscle fibres. It is composed of four specialised cell types: motor neurons, Schwann cells, muscle fibres and the recently discovered kranocytes.he neuromuscular junction comprises four cell types: the motor neuron, terminal Schwann cell, skeletal muscle fibre and kranocyte, with the motor neuron and muscle fibre separated by a gap called the synaptic cleft.
â¢ DEFENCE (noun) The noun DEFENCE has 10 senses: 1. (psychiatry) an unconscious process that tries to reduce the anxiety associated with instinctive desires. 2. (sports) the team that is trying to prevent the other team from scoring. 3. the defendant and his legal advisors collectively.
Also found in: Dictionary, Thesaurus, Medical, Acronyms, Idioms, Encyclopedia, Wikipedia. Related to defense: Department of Defense, Defense mechanisms. The forcible repulsion of an unlawful and violent attack, such as the defense of one's person, property, or country in time of war.