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 nasal septum is the wall between the nostrils that separates the two nasal passages. It supports the nose and directs airflow. The septum is made of thin bone in the back and cartilage in the front. A deviated septum occurs when the cartilage or bone is not straight. A crooked septum can make breathing difficult. The condition also can lead to snoring and sleep apnea.