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 :
The lat muscle, or latissimus dorsii is a large, roughly triangular skeletal muscle which stretches from near the spinal column across the back and up under the armpit to join the humerus, the upper arm bone. Each person has two latissimus dorsii muscles, one on each side of the body. The lat is one of a group of muscles responsible for several movements of the arm and shoulder joint. Muscles of the back are among some of the largest in the human body, and the lat muscle is the largest of these.