Calling the destruction of the World Trade Center on Sept. 11, 2011, a terrorist act is an easy call. But governments and experts differ sharply on what constitutes terrorism. By a two-to-one margin, Americans have consistently expressed concerns about new terrorist attacks at home. But thereâs a whole lot less agreement on how to define the word terrorism.. Ask 1,000 people, youâll probably get 1,000 answers.
Trapezius Muscle. The trapezius is one of the major muscles of the back and is responsible for moving, rotating, and stabilizing the scapula (shoulder blade) and extending the head at the neck. It is a wide, flat, superficial muscle that covers most of the upper back and the posterior of the neck. Like most other muscles, there are two trapezius muscles â a left and a right trapezius â that are symmetrical and meet at the vertebral column.
Muscle spindles are sensory receptors within the belly of a muscle that primarily detect changes in the length of this muscle.They convey length information to the central nervous system via sensory neurons.This information can be processed by the brain to determine the position of body parts.he spindle is a stretch receptor with its own motor supply consisting of several intrafusal muscle fibres. The sensory endings of a primary (group Ia) afferent and a secondary (group II) afferent coil around the non-contractile central portions of the intrafusal fibres.