In order to tighten the fuzes to the projectiles, and set times on the various time fuzes, a number of wrenches, and setters were used. The simplest device was the M16 J wrench. It could be used to tighten rounds to projectiles, and even used to set times on the fuzes, although this practice was frowned upon by command. A fact known all too well by this webmaster. The M18 fuze wrench was the workhorse. Used to tighten fuzes to the rounds, the handle also had a straight slot screw driver that was used to set the PDSQ fuze to delay.
Freebase(0.00 / 0 votes)Rate this definition: Spetsnaz. Spetsnaz is an umbrella term for special forces in Russian; its literal meaning is special purpose forces. Historically, the term referred to special military units controlled by the military intelligence service GRU. It also describes special purpose units, or task forces, of other ministries in post-Soviet countries.
The axon, with its surrounded sheath, is called a nerve fiber. Between each pair of sucessive Schwann cells is a gap of a node of Ranvier. The Axon Hillock The axon hillock is where the axon is joined to the cell. It is from here that the electrical firing known as an action potential usually occurs. 5. Nerve Ending (Presynaptic Terminals) Synapses are the junctions formed with other nerve cells where the presynaptic terminal of one cell comes into 'contact' with the postsynaptic membrane of another. It is at these junctions that neurons are excited, inhibited, or modulated. There are two types of synapse, electrical and chemical.