Pharyngeal consonant: A pharyngeal consonant is a consonant that is articulated primarily in the pharynx. Some phoneticians distinguish upper pharyngeal consonants, or "high" pharyngeals, pronounced by retracting the root of the tongue in the mid to upper pharynx, from (ary)epiglottal consonants, or "low" pharyngeals, which are articulated with the aryepiglottic folds against the epiglottis in the lower larynx, and even epiglotto-pharyngeal consonants consisting of both those movements combined.Infraglottic cavity: The infraglottic cavity is the portion of the larynx below the laryngeal ventricles and the rima glottidis.EpiglottitisStylohyoid muscle: The stylohyoid muscle is a slender muscle, lying anterior, and superior of the posterior belly of the digastric muscle. It shares this muscle's innervation by the facial nerve, and functions to draw the hyoid bone backwards and elevate the tongue.Brachycephalic syndrome: Brachycephalic syndrome is a pathological condition affecting short nosed dogs and cats which leads to severe respiratory distress. There are four different anatomical abnormalities that contribute to the disease, all of which occur more commonly in brachycephalic breeds: an elongated soft palate, stenotic nares, a hypoplastic trachea, and everted laryngeal saccules (a condition which occurs secondarily to the other abnormalities).Midline glossectomy: A midline glossectomy is a surgical reduction of the size of the base of the tongue (posterior tongue). It sometimes is used to treat sleep apnea.Mallampati scoreGas laser: A gas laser is a laser in which an electric current is discharged through a gas to produce coherent light. The gas laser was the first continuous-light laser and the first laser to operate on the principle of converting electrical energy to a laser light output.Steel tongue drum: A steel tongue drum, tank drum or hank drum is a round steel slit/tongue drum originally fashioned from a propane tank.Hydrogen darkening: Hydrogen darkening is a physical degradation of the optical properties of glass. Free hydrogen atoms are able to bind to the SiO2 silica glass compound forming hydroxyl (OH) - a chemical compound that interferes with the passage of light through the glass.