Overview. The major passages and structures of the upper respiratory tract include the nose or nostrils, nasal cavity, mouth, throat (pharynx), and voice box (larynx). The respiratory system is lined with a mucous membrane that secretes mucus. The mucus traps smaller particles like pollen or smoke.
About more than 50 percent of optometrists received an annual salary ranging from between $70,140 and $125,460. According to the Bureau of Labor Statistics, the median hourly wage for an optometrist is around $51.42 per hour which averages to about $106,960 per annum.
While the average starting salary from an optometrist can vary from one state to another the average starting salary for an optometrist is believed to be in the region of $54,500 per year.