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scan of Tommy Thumb's pretty song book. Tommy Thumb's Pretty Song-Book is the oldest extant anthology of English nursery rhymes, published in London in 1744.It contains the oldest printed texts of many well-known and popular rhymes, as well as several that eventually dropped out of the canon of rhymes for children.
Within the trachea there is a structure called the pessulus that divides the trachea in half where the two bronchus branch out. [24] The pessulus is ossified, and lined with tympaniform membranes that influence the sound production depending on its thickness when the air runs past the pessulus, causing vibrations. [ 25 ]
Tommy Thumb's Song Book is the earliest known collection of British nursery rhymes, printed in 1744. No original copy has survived, but its content has been recovered from later reprints. No original copy has survived, but its content has been recovered from later reprints.
The trachea is no more than 4 mm in diameter during the first year of life, expanding to its adult diameter of approximately 2 cm by late childhood. [2] [3] The trachea is more circular and more vertical in children compared to adults, [3] varies more in size, and also varies more in its position in relation to its surrounding structures. [2]
A collapsed trachea is formed as a result of defect in the cartilage, that makes the cartilage unable to support the trachea and results in dry hacking cough. In this condition there can be inflammation of the linings of the trachea. If the connective nerve tissues in the trachea degenerate it causes tracheomalacia.
The most common symptom of laryngotracheal stenosis is gradually-worsening breathlessness particularly when undertaking physical activities (exertional dyspnea).The patient may also experience added respiratory sounds which in the more severe cases can be identified as stridor but in many cases can be readily mistaken for wheeze.
Tracheomalacia is a condition or incident where the cartilage that keeps the airway (trachea) open is soft such that the trachea partly collapses especially during increased airflow. This condition is most commonly seen in infants and young children. [2] The usual symptom is stridor when a person breathes out. This is usually known as a ...
The pharynx (pl.: pharynges) is the part of the throat behind the mouth and nasal cavity, and above the esophagus and trachea (the tubes going down to the stomach and the lungs respectively). It is found in vertebrates and invertebrates, though its structure varies across species.