The rod was threaded directly to the top of the exciter and to the base of the reference force transducer, making difficult orientation, tedious alignment and customization of stinger lengths a part of every test. The through-hole armature design eliminates these problems.
The nasalis is a sphincter-like muscle of the nose whose function is to compress the nasal cartilages. It is the muscle responsible for flaring of the nostrils. Some people can use it to close the nostrils to prevent entry of water when underwater. It consists of two parts, transverse and alar :
1 The nose has two cavities, separated from one another by a wall of cartilage called the septum. 2  The shape of the nasal cavity is complex. 3  In the olfactory (smelling) portion of the nose, most of the lining is mucous membrane. A small segment of the lining contains the nerve cells that are the actual sensory organs. Fibres, called dendrites, which project from the nerve cells into the nasal cavity, are covered only by a thin layer of moisture.