youtor.org
Trachea and bronchi
>> YOUR LINK HERE: ___ http://youtube.com/watch?v=QpsGnuQHIn4
position, structure and neurovascular supply of the airways; as well as considering their clinical relevance. • #trachea • #bronchi • trachea • bronchi • trachea anatom • trachea bronchi bronchioles layers • function of trachea and esophagus • histology of trachea and lungs • trachea structure and function • trachea definition and function • bronchi and bronchioles in hindi • secondary bronchi • trachea histology • anatomy of trachea • trachea and esophagus anatomy • trachea anatomy and physiology • histology of trachea • bronchial tree anatomy • trachea anatomy and physiology in hindi • bronchial tree • The Trachea • Anatomical Position • The trachea marks the beginning of the tracheobronchial tree. It arises at the lower border of cricoid cartilage in the neck, as a continuation of the larynx. • It travels inferiorly into the superior mediastinum, bifurcating at the level of the sternal angle (forming the right and left main bronchi). As it descends, the trachea is located anteriorly to the oesophagus, and inclines slightly to the right. • The trachea, like all of the larger respiratory airways, is held open by cartilage – here in C-shaped rings. The free ends of these rings are supported by the trachealis muscle. • #tracheaThe trachea and bronchi are lined by ciliated pseudostratified columnar epithelium, interspersed by goblet cells, which produce mucus. The combination of sweeping movements by the cilia and mucus from the goblet cells forms the functional mucociliary escalator. This acts to trap inhaled particles and pathogens, moving them up out of the airways to be swallowed and destroyed. • At the bifurcation of the primary bronchi, a ridge of cartilage called the carina runs anteroposteriorly between the openings of the two bronchi. This is the most sensitive area of the trachea for triggering the cough reflex, and can be seen on bronchosco
#############################
