Trachea the trachea. The trachea is no more than 4mm diameter during the first year of life, expanding to its adult diameter by late childhood. The trachea is more mobile and of more variable length, deeper, and smaller in children. The trachea is lined with a layer of pseudostratified ciliated columnar epithelium. The epithelium contains goblet cells, which are glandular, modified simple columnar epithelial cells that produce mucins, the main component of mucus. Mucus helps to moisten and protect the airways. Mucus lines the ciliated cells of the trachea to trap inhaled foreign particles that the cilia then waft upward toward
Isa (name) Isa (name) Isa is a unisex given name originating from a variety of sources. The name is most commonly derived from the [classical Arabic] "‘Isa", an Arabic translation of Jesus, itself having a Hebrew origin. However, it is not the only translation; it is most commonly associated with Jesus as depicted in Islam, and thus, commonly used by Muslims. Meanwhile, Arabic-speaking Christians would use "Yasū‘", a more phonetic translation of Jesus. The origin of the Quranic "Isa" is complex and is detailed below. Isa was also used in the Frisian (Old Germanic) language for both males and females and was