The average diameter of the adult windpipe (or trachea) is 2.5cm (1 inch).
The upper airway is composed of the nasal passages, nasopharynx, mouth and oropharynx, and the hypopharynx. Basically, everything above the glottis is upper airway, everything below is lower airway.
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The small intestines has a diameter of about 3 cm, and can vary greatly in length. An average adult can have a small intestine that is anywhere from 15 to 32 feet in length. The small intestine is comprised of three parts: duodenum, jejunum, and ileum.
A child's airway differs from that of an adult in that the child's tongue is proportionately larger in the oropharynx compered to that of an adult. Also, a child's airway is smaller and softer and more prone to foreign body obstruction. An infant's airway is smaller and softer still and the trachea is usually about the diameter of a pencil.
On average, there are approximately 1500 miles of airways in an adult human.
Between species the diameter of the bronchi and bronchioles vary greatly. The average length of the adult bronchus is 2.5 cm and its average diameter is 13 mm.
an adult is over 18 old, an infant is under 2 years
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The most common cause of airway occlusion (airway obstruction) is choking on foreign objects. This means swallowing an obstructive object or having something lodged in your trachea causing the airway to lose its patency.
Use the head tilt chin lift procedure to open the airway. See slide 13 of the related link for a picture.
The ring of cricoid cartilage
Common uses of continuous positive airway pressure include sleep apnea, respiratory distress syndrome in infants, and adult respiratory distress syndrome.
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in unconscious patients the commonest cause for the obstruction of airway is due to the back ward falling of the tongue obstructing the airway..first aid for this unconscious subject is applying cervical collar at the site prevets obstruction...
An average dwarf galaxy is small in diameter.