Trachea into left and right main bronchi. The trachea begins level with the sixth cervical vertebra and the carina is found at the level of the fifth thoracic vertebra (T5), opposite the sternal angle and can be positioned up to two vertebrae lower or higher, depending on breathing. The trachea is surrounded by rings of hyaline cartilage; these rings are incomplete and C-shaped. The cricoid cartilage is attached to the first tracheal ring at top of the trachea and acts as the bottom of the larynx. There are fifteen to twenty rings in total, separated by narrow intervals. These reinforce the
Heather (given name) Heather (given name) Heather is a common English speaking nation given name, for girls. The name Heather actually refers to a variety of small shrubs with pink or white flowers which commonly grow in rocky areas that is literally referred to as Heather, in English. The brush is native to Scotland and England, but it is more commonly found in Scotland due to its rocky territories. The name is derived from Middle English "hather". Heather has several other definitions. The most commonly known is as a reference to a color mixture, it is most often a pale shade of blue